Set InPurgeable = true on BitmapOptions

Thanks to Stuart Lodge for the tip.
Fixed a slight bug - was getting height and width for the resized image incorrectly.
Deleting some dead code/comments.
Move the Location services into it's own project.
Breaking up the Maps Demo into it's own project.
Breaking the Maps stuff out into SimpleMapsDemo.
Deleting the old MapsAndLocationDemo solution.
Updating the README.
Removed dead layout XML
Add a demo showing how to embedded the MapFragment in an AXML layout file.
Created a Maps demo that targets Android 2.2.