Be careful naming maven aar artifacts

[stonier]

This is just a placemarker with some explanation, until they fix the android gradle plugin.

Currently your trailing name has to be unique, i.e.

org.ros.android_core.gingerbread
com.github.rosjava.android_extras.gingerbread

wont work. More explanation in https://groups.google.com/forum/#!msg/adt-dev/9FKfZspL8mg/FPBkiUYW6x0J

Close this once we know its working.