Remove Java support

This patch removes the Java support from gdb.  gcj has not seen much
development or use for years now, and was recently removed from GCC.
This patch changes gdb to follow; in the unlikely event that there are
still users using gcj, they can continue to use an older gdb to debug.
Or, they can debug in C++ mode.

Built and regtested on x86-64 Fedora 24.

2016-10-06  Tom Tromey  <tom@tromey.com>

	* MAINTAINERS: Remove Java test maintainer.
	* varobj.h (java_varobj_ops): Don't declare.
	* valprint.h (struct value_print_options)
	<pascal_static_field_print>: Update comment.
	* utils.c (producer_is_gcc): Remove java reference.
	* symtab.h (struct general_symbol_info): Remove java references.
	(SYMBOL_SEARCH_NAME): Likewise.
	* objfiles.c (allocate_objfile): Update comment.
	* linespec.c (find_linespec_symbols): Remove java references.
	* gnu-v3-abi.c (gnuv3_rtti_type, gnuv3_baseclass_offset): Remove
	java references.
	* gdbtypes.h (struct cplus_struct_type) <is_java>: Remove.
	(TYPE_CPLUS_REALLY_JAVA): Remove.
	* c-varobj.c (enum vsections): Update comment.
	* symtab.c (symbol_set_language, symbol_set_names)
	(symbol_natural_name, symbol_demangled_name)
	(demangle_for_lookup, symbol_matches_domain)
	(default_make_symbol_completion_list_break_on_1): Remove java
	references.
	(JAVA_PREFIX, JAVA_PREFIX_LEN): Remove.
	* psymtab.c (match_partial_symbol, psymtab_search_name)
	(lookup_partial_symbol): Remove java references.
	* dwarf2read.c (find_slot_in_mapped_hash): Remove java references.
	(add_partial_symbol, dwarf2_compute_name, dwarf2_physname)
	(dwarf2_add_member_fn, is_vtable_name, read_structure_type)
	(process_structure_scope, read_subroutine_type)
	(read_subrange_type, load_partial_dies)
	(new_symbol_full, determine_prefix, typename_concat)
	(dwarf2_name): Remove java references.
	(set_cu_language): Treat Java as C++.
	* c-typeprint.c (c_type_print_args): Remove java reference.
	* defs.h (enum language) <language_java>: Remove.
	* Makefile.in (SFILES, HFILES_NO_SRCDIR, COMMON_OBS, YYFILES)
	(YYOBJ, local-maintainer-clean): Don't mention java files.
	* jv-exp.y, jv-lang.c, jv-lang.h, jv-typeprint.c, jv-valprint.c,
	jv-varobj.c: Remove.

2016-10-06  Tom Tromey  <tom@tromey.com>

	* guile.texi (Types In Guile): Remove Java mentions.
	* python.texi (Types In Python): Remove Java mentions.
	* gdb.texinfo (Address Locations, Supported Languages)
	(Index Section Format): Remove Java mentions.

2016-10-06  Tom Tromey  <tom@tromey.com>

	* gdb.compile/compile.exp: Change java tests to rust.
	* gdb.base/setshow.exp: Change java tests to rust.
	* gdb.base/default.exp: Remove java from language list.
	* README (Examples): Update language example.
	* gdb.python/py-lookup-type.exp (test_lookup_type): Remove java
	test.
	* lib/gdb.exp (skip_java_tests): Remove.
	* lib/java.exp: Remove.
	* gdb.java: Remove.

4 files changed, 15 insertions, 8 deletions

diff --git a/gdb/doc/ChangeLog b/gdb/doc/ChangeLog
index c7f6248..c777e91 100644
--- a/gdb/doc/ChangeLog
+++ b/gdb/doc/ChangeLog
@@ -1,3 +1,10 @@
+2016-10-06  Tom Tromey  <tom@tromey.com>
+
+	* guile.texi (Types In Guile): Remove Java mentions.
+	* python.texi (Types In Python): Remove Java mentions.
+	* gdb.texinfo (Address Locations, Supported Languages)
+	(Index Section Format): Remove Java mentions.
+
 2016-08-15  Doug Evans  <dje@google.com>
 
 	* gdb.texinfo (Target Description Format): Update docs on "end"
diff --git a/gdb/doc/gdb.texinfo b/gdb/doc/gdb.texinfo
index cfa00ce..56cd59a 100644
--- a/gdb/doc/gdb.texinfo
+++ b/gdb/doc/gdb.texinfo
@@ -7941,7 +7941,7 @@ Any expression valid in the current working language.
 
 @item @var{funcaddr}
 An address of a function or procedure derived from its name.  In C,
-C@t{++}, Java, Objective-C, Fortran, minimal, and assembly, this is
+C@t{++}, Objective-C, Fortran, minimal, and assembly, this is
 simply the function's name @var{function} (and actually a special case
 of a valid expression).  In Pascal and Modula-2, this is
 @code{&@var{function}}.  In Ada, this is @code{@var{function}'Address}
@@ -14440,7 +14440,7 @@ being set automatically by @value{GDBN}.
 @node Supported Languages
 @section Supported Languages
 
-@value{GDBN} supports C, C@t{++}, D, Go, Objective-C, Fortran, Java,
+@value{GDBN} supports C, C@t{++}, D, Go, Objective-C, Fortran,
 OpenCL C, Pascal, Rust, assembly, Modula-2, and Ada.
 @c This is false ...
 Some @value{GDBN} features may be used in expressions regardless of the
@@ -41653,7 +41653,7 @@ switch (die->tag)
     break;
   case DW_TAG_enumerator:
     kind = VARIABLE;
-    is_static = (language != CPLUS && language != JAVA);
+    is_static = language != CPLUS;
     break;
   case DW_TAG_subprogram:
     kind = FUNCTION;
@@ -41677,7 +41677,7 @@ switch (die->tag)
   case DW_TAG_union_type:
   case DW_TAG_enumeration_type:
     kind = TYPE;
-    is_static = (language != CPLUS && language != JAVA);
+    is_static = language != CPLUS;
     break;
   default:
     assert (0);
diff --git a/gdb/doc/guile.texi b/gdb/doc/guile.texi
index 840defc..0030f3f 100644
--- a/gdb/doc/guile.texi
+++ b/gdb/doc/guile.texi
@@ -1258,7 +1258,7 @@ A string of bits.  It is deprecated.
 An unknown or erroneous type.
 
 @item TYPE_CODE_METHOD
-A method type, as found in C@t{++} or Java.
+A method type, as found in C@t{++}.
 
 @item TYPE_CODE_METHODPTR
 A pointer-to-member-function.
@@ -1322,7 +1322,7 @@ Return the enum value represented by @code{<gdb:field>} @var{field}.
 @deffn {Scheme Procedure} field-bitpos field
 Return the bit position of @code{<gdb:field>} @var{field}.
 This attribute is not available for @code{static} fields (as in
-C@t{++} or Java).
+C@t{++}).
 @end deffn
 
 @deffn {Scheme Procedure} field-bitsize field
diff --git a/gdb/doc/python.texi b/gdb/doc/python.texi
index a17e37d..d6507e5 100644
--- a/gdb/doc/python.texi
+++ b/gdb/doc/python.texi
@@ -949,7 +949,7 @@ Each field is a @code{gdb.Field} object, with some pre-defined attributes:
 @table @code
 @item bitpos
 This attribute is not available for @code{enum} or @code{static}
-(as in C@t{++} or Java) fields.  The value is the position, counting
+(as in C@t{++}) fields.  The value is the position, counting
 in bits, from the start of the containing type.
 
 @item enumval
@@ -1147,7 +1147,7 @@ An unknown or erroneous type.
 
 @vindex TYPE_CODE_METHOD
 @item gdb.TYPE_CODE_METHOD
-A method type, as found in C@t{++} or Java.
+A method type, as found in C@t{++}.
 
 @vindex TYPE_CODE_METHODPTR
 @item gdb.TYPE_CODE_METHODPTR