 - Remove IS_LOCKING_VFS() all of our filesystems support locking now  - Add IGNORE_LOCK() that only ignores VCHR files for now since no one locks    their underlying device in the leaf filesystems. (devvp)  - Add prototypes for vop_lookup_{pre,post} that I forgot before.
 - Remove IS_LOCKING_VFS() all of our filesystems support locking now
 - Add IGNORE_LOCK() that only ignores VCHR files for now since no one locks
   their underlying device in the leaf filesystems. (devvp)
 - Add prototypes for vop_lookup_{pre,post} that I forgot before.

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