re PR go/80964 (cross-gotools are not executable on host system)

	PR go/80964
	* configure.ac: Set NATIVE if host_alias = target_alias.
	* configure: Rebuild.

From-SVN: r249172

gotools/ChangeLog

+2017-06-13  Ian Lance Taylor  <iant@golang.org>
+
+	PR go/80964
+	* configure.ac: Set NATIVE if host_alias = target_alias.
+	* configure: Rebuild.
+
 2017-05-18  Ian Lance Taylor  <iant@golang.org>
 
 	PR go/80814

gotools/configure

@@ -3783,7 +3783,7 @@ ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
 
- if test "$cross_compiling" = no; then
+ if test "$host_alias" = "$target_alias"; then
   NATIVE_TRUE=
   NATIVE_FALSE='#'
 else

gotools/configure.ac

@@ -46,7 +46,7 @@ AC_PROG_INSTALL
 AC_PROG_CC
 AC_PROG_GO
 
-AM_CONDITIONAL(NATIVE, test "$cross_compiling" = no)
+AM_CONDITIONAL(NATIVE, test "$host_alias" = "$target_alias")
 
 dnl Test for -lsocket and -lnsl.  Copied from libjava/configure.ac.
 AC_CACHE_CHECK([for socket libraries], gotools_cv_lib_sockets,