File no_defined_array.patch of Package mozjs17

defined(@array) has been deprecated since perl v5.6.1, has raised
deprecation warnings since perl v5.16, and is fatal since perl v5.22

--- a/js/src/config/milestone.pl	2013-02-11 23:33:22.000000000 +0100
+++ b/js/src/config/milestone.pl	2015-07-01 14:20:14.248283399 +0200
@@ -55,7 +55,7 @@
 #
 my $milestone = Moz::Milestone::getOfficialMilestone($MILESTONE_FILE);
 
-if (defined(@TEMPLATE_FILE)) {
+if (@TEMPLATE_FILE) {
   my $TFILE;
 
   foreach $TFILE (@TEMPLATE_FILE) {