[gnome-ostree] build: Fixes for needs-rebuild computation

[Colin Walters <walters src gnome org>]

commit ba6db6b1c02afb7a03f05ee37e9c1c6f288cf7ab
Author: Colin Walters <walters verbum org>
Date:   Wed Dec 19 08:56:27 2012 -0500

    build: Fixes for needs-rebuild computation
    
    * Add setuid key
    * Correctly handle keys not being present at all, as well as being
      removed.

 src/ostbuild/js/build.js |   11 ++++++-----
 1 files changed, 6 insertions(+), 5 deletions(-)
---
diff --git a/src/ostbuild/js/build.js b/src/ostbuild/js/build.js
index 293b883..80f62ad 100644
--- a/src/ostbuild/js/build.js
+++ b/src/ostbuild/js/build.js
@@ -224,13 +224,14 @@ const Build = new Lang.Class({
     },
 
     _needsRebuild: function(previousMetadata, newMetadata) {
-        let buildKeys = ['config-opts', 'src', 'revision'];
+        let buildKeys = ['config-opts', 'src', 'revision', 'setuid'];
         for (let i = 0; i < buildKeys.length; i++) {
 	    let k = buildKeys[i];
-            if (!newMetadata[k]) {
-                return 'key ' + k + ' removed from new_metadata';
-	    }
-            if (previousMetadata[k]) {
+            if (previousMetadata[k] && !newMetadata[k]) {
+                return 'key ' + k + ' removed';
+	    } else if (!previousMetadata[k] && newMetadata[k]) {
+                return 'key ' + k + ' added';
+	    } else if (previousMetadata[k] && newMetadata[k]) {
                 let oldval = previousMetadata[k];
                 let newval = newMetadata[k];
                 if (!this._compareAny(oldval,newval)) {