[PATCH] cleanup include/linux/reiserfs_xattr.h

- #ifdef guard this header for multiple inclusion
- adjust the #include's to what is actually required by this header
- remove an unneeded #ifdef
- #endif comments

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>