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.
..
Merge remote-tracking branch 'upstream/develop' into tnc_FixTouchInputLag
Merge remote-tracking branch 'upstream/develop' into tnc_FixTouchInputLag
Merge pull request #2266 from nkast/tnc_FixTouchInputLag

Fix touch input lag that occur on some devices.
Merge branch 'develop' of git://github.com/mono/MonoGame into monogame-sdl2
Updated license headers to FNA format.
Fix extra region marker.
Merge pull request #149 from 3vi1/monogame-sdl2

Updated license headers to FNA format - Storage
FNA License Cleanup for Graphics/Vertices.
[FNA] License Headers Updates - Graphics
Merge pull request #150 from 3vi1/monogame-sdl2

FNA License Cleanup for Graphics/Vertices.
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.
Merge pull request #151 from 3vi1/monogame-sdl2

[FNA] Update License files - Graphics/PackedVector
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.