Updated the AndroidGameWindow to take into account the DepthStencil
format. This is because some devices do not create a depth buffer
by default resulting in weird artifacts when rendering 3D models
Merge remote-tracking branch 'upstream/develop' into win8xact
Fixed an issue in AddSpecular where on certain android gpu's applying
the color.a to the specular wipes out the texture.

The fix is to apply it in two operations.
Allowing for Vsync to be disabled on DirectX desktop buils.
Fixed MaximumFrameLatency to be reset on ApplyChanges().
We now force the default MaximumFrameLatency when vsync is disabled.
Fix strange song bug.
Added Obsolete attribute to GetState overload in Keyboard class.
Added description for my fix in code.
Removes trycount.
Improved performance of the bounding box from a point cloud method.
removes comment
Add a Try/Catch around creating a debug XAudio2 Device as it fails if the XAudio2 SDK is not installed. Fixes #1877
Exposed PresentInterval on SwapChainRenderTarget so that VSync can be disabled if desired.
Removed the setting of MaximumFrameLatency from SwapChainRenderTarget, since this could override the setting from the GraphicsDevice.
Merge branch 'DirectX11VsyncDisable' of https://github.com/SickheadGames/MonoGame into DirectX11VsyncDisable
Added GetFrameLatency extension to PresentInterval.
GraphicsDevice now uses this extention.
Slightly clarified documentation.
Changed SwapChainRenderTarget to use new PresentInterval extention.
Merge remote-tracking branch 'upstream/develop' into win8xact
Reverted previous change to Common.fxh
Some more changes to make the graphics mode detection work better.
Various Updates to get the Content Pipleine working on Mac
Slight changes to the API to allow custom Loggers to be assigned,
This is useful for the Addins and any custom UI.
Changed the ContentTypeWriter to emit XNA style assembly
references for backward compatability (for now)
Updated the SpriteFont processor to attempt to write
compressed textures
Added Core.Graphics support for the FontHelper (thanks kjpou1)