WinRT: bug-fix, OpenGLES2 was failing to init, after recent windowing fixes Some SDL_Window flags were getting lost inside WINRT_UpdateWindowFlags, namely SDL_WINDOW_OPENGL.

WinRT: bug-fix, fullscreen window flags weren't set if device was rotated 90 degrees

WinRT: lots of display and windowing related fixes This change-set fixes a lot of windowing related bugs, especially with regards to Windows 8.x apps running on Windows 10 (which was the driver for this work). The primary fixes include: * listed display modes were wrong, especially when launching apps into a non-fullscreen space * reported window flags were often wrong, especially on Windows 10 * fullscreen/windowed mode switches weren't failing (they are not programmatically possible in Win 8.x apps).

WinRT: fixed crash in SDL_CondWaitTimeout, when using Win10's MSVC runtime

Replaced tabs with spaces in test programs.

Added SDL_HINT_VIDEO_X11_NET_WM_PING to WhatsNew.txt for 2.0.4.

X11: Let XRandR respect multiple screens (DISPLAY=:0.0 vs :0.1, etc).

Fixed bug 3168 - xinput build failure with dxsdk Ozkan Sezer Yes, the annotations can actually be removed. They are used only by MSVC and aren't vital.

WinRT: fixed build error in latest XInput code This change has also been tested as buildable + runnable on Win32 + MSVC 2015, 2013, 2012, and 2010. It may fix similar build errors (in XInput code) that are appearing in MingW builds (on buildbot).

Minor whitespace fix.