- Fix another critical bug in ObInsertObject: don't overwrite the lookup status with...

- Fix another critical bug in ObInsertObject: don't overwrite the lookup status with the handle creation status. If the lookup returned something like OBJECT_NAME_EXISTS (which is a success + warning), we don't want to overwrite it with ObpCreateHandle's STATUS_SUCCESS. This should fix a large number of regressions (and also fixes many WINE ntdll "om" tests).
- We also now correctly dereference the object in ObInsertObject, which should reduce one source of leaks (But there is still one). OTOH, this makes the Cm code crash at shutdown (I'll fix this ASAP, this fix is worth having atm.)

svn path=/trunk/; revision=22651