fixed a generation issue for maapi.cs
fixed a library precompiler define "WINDOWS_PHONE_8_LIB" in order to avoid some conflics regarding file includes
Remove the WP8 folder , starting from this commit the WP8 runtime will share the same folder with the WP7 one a.k.a. runtimes/csharp/windowsphone
Added the WP8 runtime projects unde windowsphone folder, in order to build using the sdk approach use mosync.sln otherwise use mosync_WP8.sln