MB-11038: fdb_get_byseq needs to set the returned doc's keylen
MB-11038: fdb_get_byseq needs to set the returned doc's keylen

Change-Id: I56e34f2fbdcdcd183cd8cc59bfe77bda6112e837

sushmaad/forestdb,jinxuan/forestdb,seem-sky/forestdb,couchbase/forestdb,uvenum/forestdb,hisundar/forestdb,uvenum/forestdb,sushmaad/forestdb,wurikiji/forestdb,nvoron23/forestdb,joliss/forestdb,joliss/forestdb,zhaog/forestdb,yyangpan/forestdb,seem-sky/forestdb,wurikiji/forestdb,yyangpan/forestdb,zhaog/forestdb,nvoron23/forestdb,hisundar/forestdb,couchbase/forestdb,jinxuan/forestdb