Bug 1418425 - Do not build bsdiff on Android. The updater doesn't use it (we ship apk directly) r=glandium

MozReview-Commit-ID: FZ7A05WsQjO

--HG--
extra : rebase_source : d3ce45a8676a2d57c7ad07f1b3539d6cd0f274f6

toolkit/toolkit.mozbuild

@@ -63,7 +63,7 @@ DIRS += [
 if CONFIG['MOZ_AUTH_EXTENSION']:
     DIRS += ['/extensions/auth']
 
-if CONFIG['MOZ_UPDATER']:
+if CONFIG['MOZ_UPDATER'] and CONFIG['OS_TARGET'] != 'Android':
     DIRS += ['/other-licenses/bsdiff']
 
 # Gecko/Core components.