Enable Xlint

Also suppress sole warning.
Fix for crash during monkey testing.

adb -e shell monkey -p my.package -v 10000

java.lang.NullPointerException
at com.actionbarsherlock.internal.ActionBarSherlockNative.dispatchOptionsItemSelected(ActionBarSherlockNative.java:78)
at com.actionbarsherlock.app.SherlockPreferenceActivity.onOptionsItemSelected(SherlockPreferenceActivity.java:148)
at android.app.Activity.onMenuItemSelected(Activity.java:2534)
at com.android.internal.widget.ActionBarView$3.onClick(ActionBarView.java:167)
Fix static import which throws off Scala builds
Merge branch 'master' of https://github.com/appamatto/ActionBarSherlock into dev
Update other two fragment base class imports.
Bump the maven android plugin version.
Restore the workaround for final R values.
Merge branch 'andrewgaul-xlint' into dev

Conflicts:
	pom.xml
Update dependencies.
Merge branch 'emmby/npe-during-monkey' of https://github.com/emmby/ActionBarSherlock into dev

Conflicts:
	actionbarsherlock/src/com/actionbarsherlock/internal/ActionBarSherlockNative.java