- Add internal macros for acquiring the object directory pushlock during lookup ...

- Add internal macros for acquiring the object directory pushlock during lookup (not yet used).
- Add internal macros for incrementing/decrementing query references, and use them where appropriate. Do not yet support the path for an object which is currently being defer deleted.
- Add internal macros for cleaning up a directory lookup (not yet used and needs renaming/cleanup), initializing a directory lookup (not yet used).
- Don't call security callback in ObpDeleteNameCheck. Make sure permanent flag is still cleared after acquiring type lock. Add special call for symboilc links. Add commented out calls to lock the object directory.

svn path=/trunk/; revision=25392