CBLT-204:  create source jarfile, add to android zip, also LICENSE and Javadocs

Change-Id: Ib2213b14004bba2b90861d1216a5d26a1e6ccf58
Reviewed-on: http://review.couchbase.org/39417
Reviewed-by: Philip Labee <philip@couchbase.com>
Tested-by: Philip Labee <philip@couchbase.com>