libgo: Bump version number in libgo configure script.

From-SVN: r219629
diff --git a/libgo/configure.ac b/libgo/configure.ac
index 4482dd0..0baff41 100644
--- a/libgo/configure.ac
+++ b/libgo/configure.ac
@@ -11,7 +11,7 @@
 AC_CONFIG_SRCDIR(Makefile.am)
 AC_CONFIG_HEADER(config.h)
 
-libtool_VERSION=6:0:0
+libtool_VERSION=7:0:0
 AC_SUBST(libtool_VERSION)
 
 AM_ENABLE_MULTILIB(, ..)