[Xuzzle] Update to 1.2.2.6243

Fixed TapGestureRecognizer and bold font.
[working-with] popups, I think this fixes docs issue 176
Correct PCL Build in CSProj
[WorkingWithGestures] Update android project packages to fix build error
[UsingDependencyService] Bump package versions to fix build errors
[UsingMessagingCenter] Bump package versions and fix android build error
Adding Image Resizer sample
[working-with] images, add iOS 8 resources
[working-with] maps, add screenshots
[working-with] images, ios 8 plist
[Button*, ClassHierarchy] to 1.2.3.6257

Also added Android and WP support for orientation changes
[FormsGallery] upgrade to 1.2.3.6257

Orientation support in Android & WP; changed obsolete Font methods;
removed unnecessary Padding.
[ScaleAndRotate] upgrade to 1.2.3.6257

Also simplified instantiation from type in this and FormsGallery
[TappedPageDemo] upgrade to 1.2.3.6257

Also enabled orientation changes on Android and WP
[TipCalc] upgrade to 1.2.3.6257

Also enabled orientation on Android and WP, and fixed a XAML typo
[XAMLSamples] upgraded to 1.2.3.6257

and fixed a couple bugs
[Xuzzle] upgraded to 1.2.3.6257
Added BoxViewClock and BugSweeper

Two program demoed during the "Xamarin.Forms is Even Cooler than You
Think" talk at Evolve 2014.
Experimental XML change

to see if it affects how the program is added to the Samples gallery.