Add lockdestroy() and appropriate invocations, which corresponds to
lockinit() and must be called to clean up after a lockmgr lock is no
longer needed.
1. ntfs_read*attr*() functions now accept
uio structure to eliminate one data copying.
2. found and removed deadlock caused
by 6 concurent ls -lR.
3. started implementation of nromal
Unicode<->unix recodeing.
Obtained from: NetBSD
