TAKE - cleanup xfs locking code

[Steve Lord <lord@xxxxxxx>]

This is just a cosmetic change - plus a few code and structure size
shrinkages. 

Date:  Fri Aug 18 12:16:07 PDT 2000
Workarea:  jen.americas.sgi.com:/src/lord/xfs-linux.2.4.0-test5

The following file(s) were checked into:
  bonnie.engr.sgi.com:/isms/slinx/2.4.0-test1-xfs


Modid:  2.4.0-test1-xfs:slinx:72588a
linux/fs/xfs/linux/xfs_sema.h - 1.26
linux/fs/xfs/linux/xfs_locks.c - 1.20
        - Rationalize locking code somewhat - remove old debugging code and 
unused
          fields in locks. Replace some empy functions with macros which do 
nothing.