This moves to our normal directory layout, and removes the unused ConnectionWatcher.

Note 1: There's an apparently unused StackExchange.Redis.Modules I'm not sure about....going to let Marc nuke it if sure.

Note 2: the sentinel redis configs which are usually redis ignored may have absolute paths in them that need a quick update to get going again in a killall-> change config -> ./start-all.sh

cc @mgravell on above ^