Fix touch input lag that occur on some devices.

mono#2113

https://github.com/nkast/MonoGame/commit/f63da1f80edb9f25395a6fb416c46e7e768d2a90

I had to close the previews PR and resend after the recent changes on
TouchPanel/TouchPanelState.
..
Updated license headers to FNA format.
Fix extra region marker.
FNA License Cleanup for Graphics/Vertices.
[FNA] License Headers Updates - Graphics
Include some otherwise unused files
All files used. Removed some WinPhone junk.
Fix some OpenGLDevice warnings for Release config
Buildfixes for new project.
[FNA] Update License files - Graphics/PackedVector

This also has a spacing fix for the license files in the Storage folder, such
that they're consistent with Flibijibibo's format.
SDL 2.0.3
[FNA] Remove unused defs for Storage

Kills WINDOWS_STOREAPP, PSM, and WINRT paths not relevant to FNA.  Removed
code was specific to mobile stores and not relevant to open FNA targets.
Eliminates SDL2 def checks, as it is now the standard path.
removing #ifs for Input\Touch and Media
[FNA] Remove unnecessary def's.

Only one change - eliminate DIRECTX path in VertexElement.
FNA License Cleanup for Input and Input/Touch.
Switch to "ASCII text" file format.
Removed defs for Graphics/
Merge branch 'mgsdl2-glshader' into monogame-sdl2

Conflicts:
	MonoGame.Framework/MonoGame.Framework.SDL2.csproj