[OpenAFS] .__afsXXX files don't get removed, makes directories unremovable

[Adam Megacz]

On 1.4.2fc4, using two shell windows somewhere in /afs/...:

  window1> mkdir dir
  window2> cat > dir/file   # leave this running
  window1> ls dir
  file
  window1> rm dir/file
  window1> rmdir dir
  rmdir: dir: File exists
  window1> ls -a dir
  ./          ../         .__afs2CD9
  window2> ^C          # kill cat > dir/file, .__afs2CD9 should go away
  window1> ls -a dir
  ./          ../         .__afs2CD9
  window1> 

The .__afs2CD9 should not still be around after the ^C.  This breaks
some version control software (and probably other stuff too).

  - a

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