2 patches for improving FB device support

[glemercier]

Hi,

I submitted two patches to the patch tracker (283/284 on the ogl-es branch) for improving FB device support which I use for using Irrlicht on an ARM Cortex A9 based board (i.MX6 evaluation kit).

These patches include:
- Add support for the OpenGL ES 2 with framebuffer based devices
- Add support for key press/release events
- Add support for letters (A-Z) keys

Lots of improvments can be made in this area (from the top of my head: touch supprot, OGLES1.1), and may be reused by lots of embedded platforms using high-end processors that include built-in 2D/3D coprocessors. More patches may be coming up if those two get integrated.

Feel free to comment and ask questions.

[Nadro]

I integrated both patches with ogl-es branch. Thanks for this work!