Directory not unreferenced correctly from cache when renamed

Submitted by SzorostalpuJeti

Link to original bug (#609150)

Description

It seems that gc somehow caches the directory entries and recreating the same path mixes it up.

Steps to Reproduce:

1. Create a directory named somedir.
2. Create a subdirectory named subdir in it.
3. Put some files into subdir
4. Rename parent directory (somedir -> somedir_)
5. Create a directory named somedir.
6. Create a subdirectory named subdir in it.
7. Enter to subdir.

Actual Results: You see the files from step 3 (but you cannot see their contents).

Expected Results: Empty directory.

Version & Platform: 1.2.8.2 on Ubuntu 9.10

Additional Information: Restarting application solves the problem.

Version: 1.2.x