- Added Android HelloWorld example. You must do following steps to run it:
1. Assign your Android SDK path to ANDROID_HOME environment variable.
2. Add Android SDK (ANDROID_HOME) and Android NDK to your PATH environment variable.
3. Go to: source->Irrlicht->Android and call "ndk-build" or "ndk-build NDEBUG=1"
4. Go to: examples->17.HelloWorld_Mobile and call "ndk-build" or "ndk-build NDEBUG=1"
5. Call "ant debug" to create package
6. Connect device to PC (with USB debugging mode ON) or turn on emulator.
7. Call "adb -d install bin/HelloWorldMobile-debug.apk" (if you use emulator please add "-e" parameter instead of "-d") to install package on your device/emulator.
8. That's all! Now you can run example.

git-svn-id: http://svn.code.sf.net/p/irrlicht/code/branches/ogl-es/@4528 dfc29bdd-3216-0410-991c-e03cc46cb475