Rename the cmake files to avoid name crash

Change-Id: I21f9b4ea28208d802656ed0ae3e2937852cf988b
Reviewed-on: http://review.couchbase.org/31665
Reviewed-by: Trond Norbye <trond.norbye@gmail.com>
Tested-by: Trond Norbye <trond.norbye@gmail.com>