Use the SDL safe strcpy() function

Fixed bugs related to keyboard handling in gestureSDLTest. Fixed gesture code (dynamic memory allocation). Cleaned up gesture and test code.

Hi Sam,

20100815_1.diff contains updates for the directfb driver:

- more documentation, mainly on software OpenGL in README.directfb
- Revised error handling leading to leaner code
- Improved/fixed OpenGL handling of multiple contexts.
- Made the built-in simple window manager handle OpenGL windows.
- Rewrote pixelformat mapping - this was quite ugly before.

Well, all software GL, but working :-)

Added SDL_TouchID, SDL_FingerID, SDL_GestureID types. Converted to integer cioordinates (<- not working).

When querying the display size for a fullscreen window, the display size is the size of the fullscreen video mode.

Depend on XRender version 0.10 or above and XFixes version 2.0 or above. Moved these dependency checks into CheckXRender() and CheckXFixes().