Do a full clean rebuild after this commit!

Do a full clean rebuild after this commit!

- Begin fixing CM_KEY_NODE.
- More proper use of registry lock in create operations.
- Use ObOpenObjectByName (as a test only, ignore the results) in CmpLinkHiveToMaster.
- Implement routines to acquire/release two KCB locks atomically.
- Implement KCB dereference without lock.
- Fix locking in CmpCreateKeyControlBlock so that it now properly locks KCBs when requested.
- Implement rudimentary new-style parse routine that only walks the registry path until it's time to create the link node (since this is the only scenario where it's called from). Prints out the status of the operation but doesn't actually do anything.

svn path=/trunk/; revision=31004