NCBC-246: Update solution structure to support 3.5 project

Change-Id: Ib5857c9621fbf9acef96e9f89242bd4d088e09a5
Reviewed-on: http://review.couchbase.org/25496
Reviewed-by: Saakshi Manocha <saakshi.manocha@globallogic.com>
Tested-by: Saakshi Manocha <saakshi.manocha@globallogic.com>