Fixed cast of the OpenGL context type
Define universal answer of SIZEOF_VOIDP for 32/64-bit architectures.
This commit makes SDL_config.h universal, so it can be used with mixed
32 and 64 enviroment simultaneously.
Fixed Azamat's patch for SIZEOF_VOIDP in SDL_config.h.in
Fixed bug 1853 - Gamecontroller patch to add support for Logitech F510 (Linux)

Gerry JJ

Same mapping as for F710. Xinput mode only since I couldn't get Dinput mode to work at all.
Fixed name of the Logitech F710 controller
Fixed gcc warnings for apps using SDL headers with -Wstrict-prototypes flag.