- Added official example for iOS (both iPhone and iPad devices are supported).

git-svn-id: http://svn.code.sf.net/p/irrlicht/code/branches/ogl-es/@4516 dfc29bdd-3216-0410-991c-e03cc46cb475
Memory cleanup fix by Luong Cong Dan

git-svn-id: http://svn.code.sf.net/p/irrlicht/code/branches/ogl-es/@4517 dfc29bdd-3216-0410-991c-e03cc46cb475
- Fixed issues with transparent materials in OpenGL ES 2.0 driver.

git-svn-id: http://svn.code.sf.net/p/irrlicht/code/branches/ogl-es/@4518 dfc29bdd-3216-0410-991c-e03cc46cb475
- Improved Android build system and fix minor issues in sources.

git-svn-id: http://svn.code.sf.net/p/irrlicht/code/branches/ogl-es/@4522 dfc29bdd-3216-0410-991c-e03cc46cb475
Add check for APPLE_BGRA8888 extension

git-svn-id: http://svn.code.sf.net/p/irrlicht/code/branches/ogl-es/@4523 dfc29bdd-3216-0410-991c-e03cc46cb475