Sync readline/ to version 7.0 alpha

This patch syncs our upstream copy of readline from version 6.2 to the
latest version, 7.0 alpha (released July 10 2015).

I essentially copied what was done the last time readline was synced,
when Jan updated to readline 6.2 in 2011:
http://sourceware.org/ml/gdb-patches/2011-05/msg00003.html

Procedure:

1. I extracted the readline-7.0-alpha tarball on top of readline/.
2. I deleted all the new files under doc/ that were deliberately omitted
   before.
3. I regenerated readline/configure and readline/examples/rlfe/configure
   using autoconf 2.64.  No other configure files need regenerating.
4. I updated the function gdb_printable_part in completer.c with a
   trivial change made to the readline function it is based off of,
   printable_part in readline/complete.c.  There is more work to be done in
   completer.c to sync it with readline/complete.c, but it is non-trivial
   and should probably be done separately anyway.

Local patches that had to be reapplied:

    None.  readline 7.0 alpha contains all of our local readline
    patches.

New files in readline/:

    colors.{c,h}
    examples/{hist_erasedups,hist_purgecmd,rl-callbacktest,rlbasic}.c
    parse-colors.{c,h}
    readline.pc.in
    configure.ac

Deleted files in readline/:

    configure.in

Regressions:

After the sync there is one testsuite regression, the test
"signal SIGINT" in gdb.gdb/selftest.exp which now FAILs.  Previously,
the readline 6.2 SIGINT handler would temporarily reinstall the
underlying application's SIGINT handler and immediately re-raise SIGINT
so that the orginal handler gets invoked.  But now (since readline 6.3)
its SIGINT handler does not re-raise SIGINT or directly invoke the
original handler; it now sets a flag marking that SIGINT was raised, and
waits until readline explicitly has control to call the application's
SIGINT handler.  Anyway, because SIGINT is no longer re-raised from
within readline's SIGINT handler, doing "signal SIGINT" with a stopped
inferior gdb process will no longer resume and then immediately stop the
process (since there is no 2nd SIGINT to immediately catch).  Instead,
the inferior gdb process will now just print "Quit" and continue to run.
So with this commit, this particular test case is adjusted to reflect
this change in behavior (we now have to send a 2nd SIGINT manually to
stop it).

Aside from this one testsuite regression, I personally noticed no
regression in user-visible behavior.  Though I only tested on x86_64
and on i686 Debian Stretch.

Getting this kind of change in at the start of the GDB 7.11 development
cycle will allow us to get a lot of passive testing from developers and
from bleeding-edge users.

readline/ChangeLog.gdb:

	Import readline 7.0 alpha
	* configure: Regenerate.
	* examples/rlfe/configure: Regenerate.

gdb/ChangeLog:

	* completer.c (gdb_printable_part): Sync with readline function
	it is based off of.

gdb/testsuite/ChangeLog:

	* gdb.gdb/selftest.exp (test_with_self): Update test to now
	expect the GDB inferior to no longer immediately stop after
	being resumed with "signal SIGINT".

1 files changed, 48 insertions, 26 deletions

diff --git a/readline/Makefile.in b/readline/Makefile.in
index f4ed811..ecaf06d 100644
--- a/readline/Makefile.in
+++ b/readline/Makefile.in
@@ -26,6 +26,8 @@ PACKAGE_NAME = @PACKAGE_NAME@
 PACKAGE_STRING = @PACKAGE_STRING@
 PACKAGE_VERSION = @PACKAGE_VERSION@
 
+PACKAGE_TARNAME = @PACKAGE_TARNAME@
+
 srcdir = @srcdir@
 VPATH = @srcdir@
 top_srcdir = @top_srcdir@
@@ -62,6 +64,8 @@ localedir = @localedir@
 
 infodir = @infodir@
 
+docdir = @docdir@
+
 man3dir = $(mandir)/man3
 
 # Support an alternate destination root directory for package building
@@ -83,7 +87,7 @@ TERMCAP_LIB = @TERMCAP_LIB@
 # For libraries which include headers from other libraries.
 INCLUDES = -I. -I$(srcdir)
 
-XCCFLAGS = $(DEFS) $(LOCAL_DEFS) $(CPPFLAGS) $(INCLUDES)
+XCCFLAGS = $(DEFS) $(LOCAL_DEFS) $(INCLUDES) $(CPPFLAGS)
 CCFLAGS = $(XCCFLAGS) $(LOCAL_CFLAGS) $(CFLAGS)
 
 # could add -Werror here
@@ -112,7 +116,7 @@ CSOURCES = $(srcdir)/readline.c $(srcdir)/funmap.c $(srcdir)/keymaps.c \
 	   $(srcdir)/histfile.c $(srcdir)/nls.c $(srcdir)/search.c \
 	   $(srcdir)/shell.c $(srcdir)/savestring.c $(srcdir)/tilde.c \
 	   $(srcdir)/text.c $(srcdir)/misc.c $(srcdir)/compat.c \
-	   $(srcdir)/mbutil.c
+	   $(srcdir)/mbutil.c $(srcdir)/xfree.c
 
 # The header files for this library.
 HSOURCES = $(srcdir)/readline.h $(srcdir)/rldefs.h $(srcdir)/chardefs.h \
@@ -121,14 +125,17 @@ HSOURCES = $(srcdir)/readline.h $(srcdir)/rldefs.h $(srcdir)/chardefs.h \
 	   $(srcdir)/tilde.h $(srcdir)/rlconf.h $(srcdir)/rltty.h \
 	   $(srcdir)/ansi_stdlib.h $(srcdir)/tcap.h $(srcdir)/rlstdc.h \
 	   $(srcdir)/xmalloc.h $(srcdir)/rlprivate.h $(srcdir)/rlshell.h \
-	   $(srcdir)/rltypedefs.h $(srcdir)/rlmbutil.h
+	   $(srcdir)/rltypedefs.h $(srcdir)/rlmbutil.h \
+	   $(srcdir)/colors.h $(srcdir)/parse-colors.h
 
 HISTOBJ = history.o histexpand.o histfile.o histsearch.o shell.o mbutil.o
 TILDEOBJ = tilde.o
+COLORSOBJ = colors.o parse-colors.o
 OBJECTS = readline.o vi_mode.o funmap.o keymaps.o parens.o search.o \
 	  rltty.o complete.o bind.o isearch.o display.o signals.o \
 	  util.o kill.o undo.o macro.o input.o callback.o terminal.o \
-	  text.o nls.o misc.o compat.o xfree.o xmalloc.o $(HISTOBJ) $(TILDEOBJ)
+	  text.o nls.o misc.o $(HISTOBJ) $(TILDEOBJ) $(COLORSOBJ) \
+	  xmalloc.o xfree.o compat.o
 
 # The texinfo files which document this library.
 DOCSOURCE = doc/rlman.texinfo doc/rltech.texinfo doc/rluser.texinfo
@@ -138,12 +145,15 @@ DOCUMENTATION = $(DOCSOURCE) $(DOCOBJECT) $(DOCSUPPORT)
 
 CREATED_MAKEFILES = Makefile doc/Makefile examples/Makefile shlib/Makefile
 CREATED_CONFIGURE = config.status config.h config.cache config.log \
-		    stamp-config stamp-h
+		    stamp-config stamp-h readline.pc
 CREATED_TAGS = TAGS tags
 
 INSTALLED_HEADERS = readline.h chardefs.h keymaps.h history.h tilde.h \
 		    rlstdc.h rlconf.h rltypedefs.h
 
+OTHER_DOCS = $(srcdir)/CHANGES $(srcdir)/INSTALL $(srcdir)/README
+OTHER_INSTALLED_DOCS = CHANGES INSTALL README
+
 ##########################################################################
 TARGETS = @STATIC_TARGET@ @SHARED_TARGET@
 INSTALL_TARGETS = @STATIC_INSTALL_TARGET@ @SHARED_INSTALL_TARGET@
@@ -193,13 +203,13 @@ stamp-h: config.status $(srcdir)/config.h.in
 	CONFIG_FILES= CONFIG_HEADERS=config.h ./config.status
 	echo > $@
 
-#$(srcdir)/configure: $(srcdir)/configure.in	## Comment-me-out in distribution
+#$(srcdir)/configure: $(srcdir)/configure.ac	## Comment-me-out in distribution
 #	cd $(srcdir) && autoconf	## Comment-me-out in distribution
 
 
 shared:	force
 	-test -d shlib || mkdir shlib
-	-( cd shlib ; ${MAKE} ${MFLAGS} all )
+	( cd shlib ; ${MAKE} ${MFLAGS} all )
 
 documentation: force
 	-test -d doc || mkdir doc
@@ -211,17 +221,7 @@ examples: force
 
 force:
 
-## GDB LOCAL
-## Don't mess with people's installed readline's.
-## This tries to install this version of readline over whatever
-## version is already installed on the system (which could be a
-## newer version). There is no real reason for us to install
-## readline along with GDB. GDB links statically against readline,
-## so it doesn't depend on us installing it on the system.
-
-install:
-
-#install:	$(INSTALL_TARGETS)
+install:	$(INSTALL_TARGETS)
 
 install-headers: installdirs ${INSTALLED_HEADERS}
 	for f in ${INSTALLED_HEADERS}; do \
@@ -245,7 +245,7 @@ install-static: installdirs $(STATIC_LIBS) install-headers install-doc install-e
 installdirs: $(srcdir)/support/mkinstalldirs
 	-$(SHELL) $(srcdir)/support/mkinstalldirs $(DESTDIR)$(includedir) \
 		$(DESTDIR)$(includedir)/readline $(DESTDIR)$(libdir) \
-		$(DESTDIR)$(infodir) $(DESTDIR)$(man3dir)
+		$(DESTDIR)$(infodir) $(DESTDIR)$(man3dir) $(DESTDIR)$(docdir)
 
 uninstall: uninstall-headers uninstall-doc uninstall-examples
 	-test -n "$(DESTDIR)$(libdir)" && cd $(DESTDIR)$(libdir) && \
@@ -253,24 +253,26 @@ uninstall: uninstall-headers uninstall-doc uninstall-examples
 	-( cd shlib; ${MAKE} ${MFLAGS} DESTDIR=${DESTDIR} uninstall )
 
 install-shared: installdirs install-headers shared install-doc
-	-( cd shlib ; ${MAKE} ${MFLAGS} DESTDIR=${DESTDIR} install )
+	( cd shlib ; ${MAKE} ${MFLAGS} DESTDIR=${DESTDIR} install )
 	
 uninstall-shared: maybe-uninstall-headers
 	-( cd shlib; ${MAKE} ${MFLAGS} DESTDIR=${DESTDIR} uninstall )
 
-install-examples: installdirs install-headers shared
+install-examples: installdirs install-headers
 	-( cd examples ; ${MAKE} ${MFLAGS} DESTDIR=${DESTDIR} install )
 	
 uninstall-examples: maybe-uninstall-headers
 	-( cd examples; ${MAKE} ${MFLAGS} DESTDIR=${DESTDIR} uninstall )
 
 install-doc:	installdirs
+	$(INSTALL_DATA) $(OTHER_DOCS) $(DESTDIR)$(docdir)
 	-( if test -d doc ; then \
 		cd doc && \
 		${MAKE} ${MFLAGS} infodir=$(infodir) DESTDIR=${DESTDIR} install; \
 	  fi )
 
 uninstall-doc:
+	-( cd $(DESTDIR)$(docdir) && ${RM} ${OTHER_INSTALLED_DOCS} )
 	-( if test -d doc ; then \
 		cd doc && \
 		${MAKE} ${MFLAGS} infodir=$(infodir) DESTDIR=${DESTDIR} uninstall; \
@@ -285,23 +287,26 @@ tags:	force
 clean:	force
 	$(RM) $(OBJECTS) $(STATIC_LIBS)
 	$(RM) readline readline.exe
-	-( cd shlib && $(MAKE) $(MFLAGS) $@ )
+	( cd shlib && $(MAKE) $(MFLAGS) $@ )
 	-( cd doc && $(MAKE) $(MFLAGS) $@ )
 	-( cd examples && $(MAKE) $(MFLAGS) $@ )
 
 mostlyclean: clean
-	-( cd shlib && $(MAKE) $(MFLAGS) $@ )
+	( cd shlib && $(MAKE) $(MFLAGS) $@ )
 	-( cd doc && $(MAKE) $(MFLAGS) $@ )
 	-( cd examples && $(MAKE) $(MFLAGS) $@ )
 
 distclean maintainer-clean: clean
-	-( cd shlib && $(MAKE) $(MFLAGS) $@ )
+	( cd shlib && $(MAKE) $(MFLAGS) $@ )
 	-( cd doc && $(MAKE) $(MFLAGS) $@ )
 	-( cd examples && $(MAKE) $(MFLAGS) $@ )
 	$(RM) Makefile
 	$(RM) $(CREATED_CONFIGURE)
 	$(RM) $(CREATED_TAGS)
 
+readline.pc:	config.status $(srcdir)/readline.pc.in
+	$(SHELL) config.status
+
 info dvi html pdf ps:
 	-( cd doc && $(MAKE) $(MFLAGS) $@ )
 
@@ -332,7 +337,8 @@ bind.o: history.h
 callback.o: rlconf.h
 callback.o: rldefs.h ${BUILD_DIR}/config.h rlconf.h
 callback.o: readline.h keymaps.h rltypedefs.h chardefs.h tilde.h rlstdc.h
-compat.o: rlstdc.h
+compat.o: ${BUILD_DIR}/config.h
+compat.o: rlstdc.h rltypedefs.h
 complete.o: ansi_stdlib.h posixdir.h posixstat.h
 complete.o: rldefs.h ${BUILD_DIR}/config.h rlconf.h
 complete.o: readline.h keymaps.h rltypedefs.h chardefs.h tilde.h rlstdc.h
@@ -393,6 +399,7 @@ readline.o: posixstat.h ansi_stdlib.h posixjmp.h
 rltty.o: rldefs.h ${BUILD_DIR}/config.h rlconf.h
 rltty.o: rltty.h
 rltty.o: readline.h keymaps.h rltypedefs.h chardefs.h tilde.h rlstdc.h
+savestring.o: ${BUILD_DIR}/config.h
 search.o: rldefs.h ${BUILD_DIR}/config.h rlconf.h
 search.o: readline.h keymaps.h rltypedefs.h chardefs.h tilde.h
 search.o: ansi_stdlib.h history.h rlstdc.h
@@ -422,10 +429,18 @@ vi_mode.o: rldefs.h ${BUILD_DIR}/config.h rlconf.h
 vi_mode.o: readline.h keymaps.h rltypedefs.h chardefs.h tilde.h
 vi_mode.o: history.h ansi_stdlib.h rlstdc.h
 xfree.o: ${BUILD_DIR}/config.h
-xfree.o: ansi_stdlib.h readline.h
+xfree.o: ansi_stdlib.h
 xmalloc.o: ${BUILD_DIR}/config.h
 xmalloc.o: ansi_stdlib.h
 
+colors.o: ${BUILD_DIR}/config.h colors.h
+colors.o: readline.h keymaps.h rltypedefs.h chardefs.h tilde.h rlstdc.h
+colors.o: rlconf.h  
+colors.o: ansi_stdlib.h posixstat.h
+parse-colors.o: ${BUILD_DIR}/config.h colors.h parse-colors.h
+parse-colors.o: rldefs.h rlconf.h
+parse-colors.o: readline.h keymaps.h rltypedefs.h chardefs.h tilde.h rlstdc.h
+
 bind.o: rlshell.h
 histfile.o: rlshell.h
 nls.o: rlshell.h
@@ -455,6 +470,8 @@ text.o: rlprivate.h
 undo.o: rlprivate.h
 util.o: rlprivate.h
 vi_mode.o: rlprivate.h
+colors.o: rlprivate.h
+parse-colors.o: rlprivate.h
 
 bind.o: xmalloc.h
 callback.o: xmalloc.h
@@ -483,6 +500,8 @@ util.o: xmalloc.h
 vi_mode.o: xmalloc.h
 xfree.o: xmalloc.h
 xmalloc.o: xmalloc.h
+colors.o: xmalloc.h
+parse-colors.o: xmalloc.h
 
 complete.o: rlmbutil.h
 display.o: rlmbutil.h
@@ -526,6 +545,9 @@ vi_mode.o: $(srcdir)/vi_mode.c
 xfree.o: $(srcdir)/xfree.c
 xmalloc.o: $(srcdir)/xmalloc.c
 
+colors.o: $(srcdir)/parse-colors.c
+parse-colors.o: $(srcdir)/parse-colors.c
+
 histexpand.o: $(srcdir)/histexpand.c
 histfile.o: $(srcdir)/histfile.c
 history.o: $(srcdir)/history.c