CBLT-255:  add script to build native java client (build_cblite_java.sh)

Change-Id: I4dd25b6b5aa006994873aa0060886a8e7ea43f43
Reviewed-on: http://review.couchbase.org/39703
Reviewed-by: Philip Labee <philip@couchbase.com>
Tested-by: Philip Labee <philip@couchbase.com>