Add -Qunused-arguments for clang

Change-Id: I509250c16f6b65855fdcd20d5497f9adf1ad2509
Reviewed-on: http://review.couchbase.org/28677
Reviewed-by: Trond Norbye <trond.norbye@gmail.com>
Tested-by: Trond Norbye <trond.norbye@gmail.com>
Set -L and -R globally (for cmake)

Change-Id: I837d47725078bd6b7f88498e7c907c019a77608b
Reviewed-on: http://review.couchbase.org/28664
Reviewed-by: Trond Norbye <trond.norbye@gmail.com>
Tested-by: Trond Norbye <trond.norbye@gmail.com>
Build cbsasl

Change-Id: I15a14cf13f316323379f3a98767e329f10ea03ce
Build memcached with cmake

Change-Id: I5d31bb93e2eb84537e4d4a596654440c0d4805b5