Bug 381172, use DisableCompleteJump to override of code that forces complete update, r=preed

tools/patcher/MozAUSConfig.pm

@@ -430,6 +430,13 @@ sub CreateUpdateGraph
         $u_config->{$u_key}->{'rc'} = {};
         if (defined($u_rcInfo)) {
             foreach my $channel (keys(%{$u_rcInfo})) {
+                # Such a hack... this isn't a channel name at all; it's a config
+                # variable, to control the behavior of sending the complete 
+                # "jump" updates to the RC channels...
+                if ($channel eq 'DisableCompleteJump') {
+                    $u_config->{$u_key}->{'DisableCompleteJump'} = $u_rcInfo->{$channel};
+                    next;
+                }
                 $u_config->{$u_key}->{'rc'}->{$channel} = $u_rcInfo->{$channel};
             }
         }

tools/patcher/patcher2.pl

@@ -1077,6 +1077,11 @@ sub CreatePartialPatchinfo {
         my $complete_url = $complete->{'url'};
 
         my $currentUpdateRcInfo = $u_config->{$u}->{'rc'};
+        # Used in the case where we never released rc1, so rc2 or 3 or 4 is
+        # actually the "first" release rc.
+        my $disableCompleteJumpForRcs =
+         exists($u_config->{$u}->{'DisableCompleteJump'}) && 
+         int($u_config->{$u}->{'DisableCompleteJump'});
 
         my @channels = @{$u_config->{$u}->{'all_channels'}};
         my $channel = $u_config->{$u}->{'channel'};
@@ -1162,6 +1167,7 @@ sub CreatePartialPatchinfo {
                              $currentUpdateRcInfo->{$channel};
 
                             $serveCompleteUpdateToRcs =
+                             (!$disableCompleteJumpForRcs) &&
                              (int($currentUpdateRcInfo->{$channel}) > 1);
 
                             if ($serveCompleteUpdateToRcs) {