Modified Snake Sample app to run on non-touch devices like Google Tv and also devices with no dpad support

2D canvas DrawVertex to create a vector graphic background
touch & keypad playable
landscape & portrait for all known device sizes.  All measurements in DP and nicely scaling.
using xml drawables to rotate "dpad" arrow

Change-Id: I995acaaf0935c13c03fcbcf974ce5af06f46780e
21 files changed