Re: libthreads provenance

If you do a diff of hurd/libthreads vs mk83/user/threads it's obvious which
changes are ours and which are old CMU vs newer CMU.  Most or all of our
changes have comments, most of which contain "GNU".  There are lots of
other nit diffs you can see, like K&R -> prototype and 64-bit cleanups that
we obviously never would have manually reverted.  There are some other dead
giveaways like CMU copyrights with year 1993 present in MK83 vs missing in
our version.  And to really prove my case that the MK82 code has changes
that postdate your snarfing the code into the hurd:

- * Revision 2.6  93/05/10  17:51:38  rvb
- *	     Use C Comment
- *	     [93/05/04  18:14:05  rvb]
+ * Revision 1.1  1992/10/06 18:31:16  mib
+ * entered into RCS

Smoking gun, I'd call that. :-)