CCBC-386: server.c - migrate to lcbio_TIMER and retry queue

Change-Id: I0ba1bff74fae3f7a7efb756f870c96adeb15efbe
Reviewed-on: http://review.couchbase.org/36080
Reviewed-by: Brett Lawson <brett19@gmail.com>
Tested-by: Mark Nunberg <mnunberg@haskalah.org>