MB-8547:  choose community or enterprise license at build time,
          and remove individual names from copyright statement.

Change-Id: I521d0aafc8b1e82bb6ef024109e5252d5aa43d79
Reviewed-on: http://review.couchbase.org/27268
Reviewed-by: Philip Labee <philip@couchbase.com>
Tested-by: Philip Labee <philip@couchbase.com>