Made Hive observable so objects downstream can properly synchronize or dump cionnections when the configuration changes.  (Mostly to facilitate shards integration)
Made Hive observable so objects downstream can properly synchronize or dump cionnections when the configuration changes.  (Mostly to facilitate shards integration)

git-svn-id: 844d946efecc0c73e9bbe621f4e6d7ad48f82261@363 8f33570f-f526-0410-8023-93ba2dbcbd24

britt/hivedb,aruanruan/hivedb