Decode libevent mask in the JSON printout
Decode libevent mask in the JSON printout

Change-Id: I5eaa07db681e83c4d4a1eb7b86172b26f91143a6
Reviewed-on: http://review.couchbase.org/56854
Reviewed-by: Dave Rigby <a09264da4832c7ff1d3bf1608a19f4b870f93750@couchbase.com>
Tested-by: buildbot <80754af91bfb6d1073585b046fe0a474ce868509@couchbase.com>

owendCB/memcached,daverigby/memcached,daverigby/kv_engine,daverigby/memcached,daverigby/kv_engine,daverigby/kv_engine,daverigby/memcached,owendCB/memcached,couchbase/memcached,daverigby/memcached,daverigby/kv_engine,couchbase/memcached,couchbase/memcached,owendCB/memcached,owendCB/memcached,couchbase/memcached