MB-1143 Integrate vbmap tool into build system.

Change-Id: I48e0635954103b59ec0e9d7105b894af122b8cfd
Reviewed-on: http://review.couchbase.org/27329
Reviewed-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
Tested-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>