Testing fullscreen window in the accelerometer test.

--HG--
extra : rebase_source : 891b1c0b53e6a9d509c9ba86f4fc5943fafe0ec1
SDL 2.0.0 defined __inline__ and some code relies on it now.

--HG--
extra : rebase_source : b16922234216c3e66aac75ff77bcb8b041eeb729
Fixed duplicate const warning

--HG--
extra : rebase_source : 4529dd9d2bd4eb18a194d81f300cf47553ef2044
SDL_GetPrefPath() now uses the organization on all platforms.

Even if that's not the general convention for a given platform.

--HG--
extra : rebase_source : f3a8035be94bd416fca5bda09d1d93101bc4b688