java-libs: add the android-support-v7-appcompat library to the dependencies
java-libs: update the android-support-v4.jar of the SlidingMenu dependency
Support: replace the ActionBarSherlock library by android-support-v7-appcompat

This change is confirmed to work on Android 2.2.
java-libs: remove the ActionBarSherlock library
Remove the generated files
Add .gitignore for appcompat
Remove more generated files
De-duplicate .gitignores for java-libs
Remove ActionBarSherlock folder
VideoPlayer: use the @TargetApi on the method, not the main class
VideoPlayer: remove write-only variable
Re-configure until config.h was created, not only configure
VideoPlayerActivity: init libVLC earlier

This should solve numerous crashes
VideoPlayer: correct indentation
VideoPlayerActivity: avoid mLibVLC null crash
VideoPlayerActivity: cosmetics
AudioPlayer: avoid NullPointerException on getActivity()
LibVLC: add function to get Android cache path using JNI
libvlcjni: set libdvdcss cache path
UI : add nav menu icon to player and remote views