Merge branch 'PHP-7.0' into PHP-7.1

* PHP-7.0:
  fix stub to accept user properly

Author: krakjoe

scripts/dev/gen_verify_stub

@@ -30,7 +30,7 @@ do
 		exit 3
 	fi
 
-	if [ -n $GPG_USER ]
+	if [ "x$GPG_USER" == "x" ]
 	then
 		gpg --armor --detach-sign $TARBALL
 	else