This has bugged me for a while. Since we are missing the source SVGs for this theme, removed the leaves crudely in GIMP. Also added some basic roots. Someone more artistic is encouraged to try and improve it.

Oops

unbreak engine

Improved cmake build script for Android: - Error out when Ant or android can't be found - Attempt to find the NDK toolchain binaries on Windows and Linux instead of assuming Linux - Use find_program instead of find_path to find some binaries - ANDROID_SDK now refers to the Android SDK base directory - Fixed detection of android.bat on Windows - Output of the android tool is now shown so that success/failure is visible