Don't use recursive make

And drop the unused stuff from the Makefile

Change-Id: I1f77c3b35b8e9984e06f7e8d1a5da69a9e575bc9
Reviewed-on: http://review.couchbase.org/25985
Tested-by: Trond Norbye <trond.norbye@gmail.com>
Reviewed-by: Trond Norbye <trond.norbye@gmail.com>