Simplified WP8 trial mode because the Windows 8 style license information is error-prone
Added bitmap content classes for DXT1,3,5.
DxtBitmapContent is now abstract.
Removed DxtBitmapContent.TryGetFormat (implemented by derived classes).
Added Bgr565, Bgra4444, Byte4 packed vector classes to all projects.
Corrected case for DxtBitmapContent, PvrtcBitmapContent.
DxtBitmapContent now matches XNA and C# naming conventions.
PvrtcBitmapContent follows suit.
Second part of rename.
Fix missing abstract keyword.
Fix reference to renamed PvrtcBitmapContent class.
Merge pull request #1688 from slygamer/dxtbitmapcontent-packedvector

DxtBitmapContent and PackedVector additions
Merge pull request #1684 from Nezz/wp8_trialsimplify

Simplified WP8 trial mode - built the win8, windows, and wingl projects against these changes and they all checked out. I don't have a wp8 specific test case for this.
Fixed a bug in the MediaQueue where the active song did not default to -1.
This would cause existing games to think that a song was available already
when it wasn't. The XNA default is -1.
Merge remote-tracking branch 'upstream/develop' into develop
Merge pull request #1690 from dellis1972/develop

Fixed default values for MediaQueue ActiveSongIndex. I saw this when I was doing the Song.loadFromUri implementations too. Good eye Dean!
Merge pull request #58 from mono/develop

Merge back from develop