Compile against SDL2
Convert surfaces for textures correctly
Remove old ignore mouse motion code

Was a workaround for a bug in SDL when grabbing the mouse
Fixed in SDL2
Get mouse pos before hiding to get correct value
Remove window title
Removed SDLMain.m, not required with SDL2
Merge branch 'master' into sdl2
Merge branch 'master' into sdl2
Merge branch 'master' into sdl2
Add al_fs_chdir_app_data() since SDLMain isn't there to do it for us anymore
Set working directory as part of host_systems_init()
Copy MQ over from hamilton, use SDL2 atomic macros
Merge branch 'master' into sdl2
Merge branch 'master' into sdl2
Include fs_osx.c in scons build
Use standard SIZE_MAX instead of SIZE_T_MAX
No longer need RASPI specific code in host
Add dummy fs implementation for standard POSIX systems
Update SConscript for RasPi
Update README