* gcc_update: Use $GCC_SVN to retrieve branch and revision.

From-SVN: r187337

contrib/ChangeLog

+2012-05-09  David Edelsohn  <dje.gcc@gmail.com>
+
+	* gcc_update: Use $GCC_SVN to retrieve branch and revision.
+
 2012-05-01  Richard Henderson  <rth@redhat.com>
 
 	* gcc_update: Add libatomic generated files.

contrib/gcc_update

@@ -372,8 +372,8 @@ case $vcs_type in
 	    exit 1
 	fi
 
-	revision=`svn info | awk '/Revision:/ { print $2 }'`
-	branch=`svn info | sed -ne "/URL:/ {
+	revision=`$GCC_SVN info | awk '/Revision:/ { print $2 }'`
+	branch=`$GCC_SVN info | sed -ne "/URL:/ {
 	    s,.*/trunk,trunk,
 	    s,.*/branches/,,
 	    s,.*/tags/,,