Corrected package list for Wayland/Mir support (was missing libxkbcommon-dev).

--HG--
extra : rebase_source : 636f233d051a3077eb6999da03a9397a86843b11
Added SDL_opengl_glext.h to the list of headers to install.
Don't link directly against OpenGL.framework on Mac OS X.

We dlopen() it as appropriate already.
Added missing headers that should be installed.
Code analysis annotations found a legitimate bug!
Fix warnings, only major one being an SDL_SetError not providing enough arguments.
Turns out visualstudio does not like PRIu64, soo lets just cast it to llu.
Chrome's Native Client backend implementation
Adds missing Makefile for NACL test and a couple of smaller fixes
dront78 implemented YUV texture support for OpenGL ES 2.0
Fixed loopwave crash with no command line arguments
Fixed another loopwave crash with no command line arguments
Fixed initializing test event queue
Fixed crash with SDL_SetError(NULL)
Added SDL_sqrtf(), SDL_tan(), SDL_tanf()
Fixed compile warnings
Fixed building on command line Mac OS X
Updated projects for Visual Studio 2010, 2012 and 2013
* Test programs use project references instead of hard-coding SDL library dependencies
* Test data files are copied only when needed.
* Copying SDL2.dll is no longer necessary
* Fixed /SAFESEH warning
* Fixed attempted rebuild of SDL every time a test program is run
Fixed typo in source comment.
Fixed doxygen comment in header.