I just uploaded Android Lint to the Central Repository recently as part of my work on the Android4Maven project and now my good friend and conspirator Jake Wharton and myself have done the groundwork to get the compatibility/support library V4 in revision 6 there as well. It should be there right now and you can use it in your project with
<dependency> <groupId>com.google.android</groupId> <artifactId>support-v4</artifactId> <version>r6</version> </dependency>
This should help projects like ActionBarSherlock, Roboguice and others getting cleanly into the Central Repository too. if you want to see a working example just take a look at the pom file of the support4demos app in the samples for the Android Maven Plugin.
PS: v13 should follow when some requirements to build it (ICS-MR2) are in central..