macosx: add hack so deprecated platforms don't get updates they can't execute

extras/package/macosx/Info.plist.in

@@ -1318,8 +1318,6 @@
 			<string>Binary</string>
 		</dict>
 	</array>
-	<key>SUFeedURL</key>
-	<string>http://update.videolan.org/vlc/sparkle/vlc.xml</string>
 	<key>SUPublicDSAKeyFile</key>
 	<string>dsa_pub.pem</string>
 	<key>CFBundleExecutable</key>

modules/gui/macosx/intf.m

@@ -655,6 +655,16 @@ static VLCMain *_o_sharedMainInstance = nil;
 
     [self initStrings];
 
+    NSURL *feedURL;
+#ifdef __x86_64__
+    feedURL = [NSURL URLWithString:@"http://update.videolan.org/vlc/sparkle/vlc-intel64.xml"];
+#elif __i386__
+    feedURL = [NSURL URLWithString:@"http://update.videolan.org/vlc/sparkle/vlc-intel32.xml"];
+#else
+    feedURL = [NSURL URLWithString:@"http://update.videolan.org/vlc/sparkle/vlc-powerpc.xml"];
+#endif
+    [[SUUpdater sharedUpdater] setFeedURL:feedURL];
+
     nib_main_loaded = TRUE;
 }