Android Build

[TIMOB-14976] Android Build: Init the build/android directory and files
[TIMOB-14977] Android Build: Compile resources
[TIMOB-14981] Android Build: Package Hook
[TIMOB-14979] Android Build: Build Java files and run dexer

[TIMOB-7827] Android: Please add support for extrahigh density (320 dpi) devices
[TIMOB-10801] Android: Allow 9-patch images in splash screen
[TIMOB-15307] CLI: support custom keystore when running on Android device
[TIMOB-14683] CLI: Titanium fails to build when only platform-specific app.js is present