Add descriptions to magic StoredValue::bySeqno values
Add descriptions to magic StoredValue::bySeqno values

Change-Id: I01481aae95b36b29ef2c8403e4793fab0599d876
Reviewed-on: http://review.couchbase.org/84370
Tested-by: Build Bot <80754af91bfb6d1073585b046fe0a474ce868509@couchbase.com>
Reviewed-by: Sriram Ganesan <fde85c3124eed34938bb85159f430bf7e5b650f6@couchbase.com>
Reviewed-by: Trond Norbye <60edd2ef23891a753f231b0c6f161dc634079a93@gmail.com>

daverigby/kv_engine,daverigby/kv_engine,daverigby/kv_engine,daverigby/kv_engine