libgo, compiler: Upgrade libgo to Go 1.4, except for runtime.

This upgrades all of libgo other than the runtime package to
the Go 1.4 release.  In Go 1.4 much of the runtime was
rewritten into Go.  Merging that code will take more time and
will not change the API, so I'm putting it off for now.

There are a few runtime changes anyhow, to accomodate other
packages that rely on minor modifications to the runtime
support.

The compiler changes slightly to add a one-bit flag to each
type descriptor kind that is stored directly in an interface,
which for gccgo is currently only pointer types.  Another
one-bit flag (gcprog) is reserved because it is used by the gc
compiler, but gccgo does not currently use it.

There is another error check in the compiler since I ran
across it during testing.

gotools/:
	* Makefile.am (go_cmd_go_files): Sort entries.  Add generate.go.
	* Makefile.in: Rebuild.

From-SVN: r219627

1 files changed, 25 insertions, 4 deletions

diff --git a/libgo/testsuite/gotest b/libgo/testsuite/gotest
index 1bcd4b9..3596d72 100755
--- a/libgo/testsuite/gotest
+++ b/libgo/testsuite/gotest
@@ -335,6 +335,15 @@ if [ "x$xgofiles" != "x" ]; then
 	havex=true
 fi
 
+testmain=
+if $havex && fgrep 'func TestMain(' $xgofiles >/dev/null 2>&1; then
+  package=`grep '^package[ 	]' $xgofiles | sed 1q | sed -e 's/.* //'`
+  testmain="${package}.TestMain"
+elif test -n "$gofiles" && fgrep 'func TestMain(' $gofiles >/dev/null 2>&1; then
+  package=`grep '^package[ 	]' $gofiles | sed 1q | sed -e 's/.* //'`
+  testmain="${package}.TestMain"
+fi
+
 set -e
 
 package=`echo ${srcdir} | sed -e 's|^.*libgo/go/||'`
@@ -415,14 +424,19 @@ localname() {
 	fi
 	echo 'import "testing"'
 	echo 'import __regexp__ "regexp"' # rename in case tested package is called regexp
+	if ! test -n "$testmain"; then
+		echo 'import __os__ "os"'
+	fi
 	# test array
 	echo
 	echo 'var tests = []testing.InternalTest {'
 	for i in $tests
 	do
 		n=$(testname $i)
-		j=$(localname $i)
-		echo '	{"'$n'", '$j'},'
+		if test "$n" != "TestMain"; then
+			j=$(localname $i)
+			echo '	{"'$n'", '$j'},'
+		fi
 	done
 	echo '}'
 
@@ -467,8 +481,15 @@ func matchString(pat, str string) (result bool, err error) {
 }
 
 func main() {
-	testing.Main(matchString, tests, benchmarks, examples)
-}'
+	m := testing.MainStart(matchString, tests, benchmarks, examples)
+'
+	if test -n "$testmain"; then
+		echo "	${testmain}(m)"
+	else
+		echo '	__os__.Exit(m.Run())'
+	fi
+
+	echo '}'
 }>_testmain.go
 
 case "x$dejagnu" in