re PR go/54918 (libgo.so.0 is not runtime compatible between gcc-4.6.2 and gcc-4.7.x)

	PR go/54918
libgo: Set library version number.

From-SVN: r192706

libgo/Makefile.am

@@ -1860,7 +1860,8 @@ libgo_go_objs = \
 
 libgo_la_SOURCES = $(runtime_files)
 
-libgo_la_LDFLAGS = $(PTHREAD_CFLAGS) $(AM_LDFLAGS)
+libgo_la_LDFLAGS = \
+	-version-info $(libtool_VERSION) $(PTHREAD_CFLAGS) $(AM_LDFLAGS)
 
 libgo_la_LIBADD = \
 	$(libgo_go_objs) ../libbacktrace/libbacktrace.la \

libgo/Makefile.in

@@ -2002,7 +2002,9 @@ libgo_go_objs = \
 	unicode/utf8.lo
 
 libgo_la_SOURCES = $(runtime_files)
-libgo_la_LDFLAGS = $(PTHREAD_CFLAGS) $(AM_LDFLAGS)
+libgo_la_LDFLAGS = \
+	-version-info $(libtool_VERSION) $(PTHREAD_CFLAGS) $(AM_LDFLAGS)
+
 libgo_la_LIBADD = \
 	$(libgo_go_objs) ../libbacktrace/libbacktrace.la \
 	$(LIBFFI) $(PTHREAD_LIBS) $(MATH_LIBS) $(NET_LIBS)

libgo/configure

@@ -2493,7 +2493,7 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 ac_config_headers="$ac_config_headers config.h"
 
 
-libtool_VERSION=1:0:0
+libtool_VERSION=3:1:0
 
 
 # Default to --enable-multilib

libgo/configure.ac

@@ -11,7 +11,7 @@ AC_INIT(package-unused, version-unused,, libgo)
 AC_CONFIG_SRCDIR(Makefile.am)
 AC_CONFIG_HEADER(config.h)
 
-libtool_VERSION=1:0:0
+libtool_VERSION=3:1:0
 AC_SUBST(libtool_VERSION)
 
 AM_ENABLE_MULTILIB(, ..)