Possible race condition noted r295622 -> r295654

[David Wolfskill]

Given some of the reports of problems building head recently, my initial
attempts this morning (upgrading head/amd64) in place from r295622 to
r295654) were "clean" builds.

My "build machine" reported no trouble (using -j16).

On my laptop, also using -j16, the process terminated prematurely, with
whines about inability to find libopythagoras.

In a half-hearted attempt, I then immediately attempted an "unclean"
build ("make -j 16 --DNO_CLEAN buildworld"); unsurprisingly, that
failed.

On a bit of a whim, I then tried "make -j14 buildworld" -- that
succeeeded.

I've placed a typescript of all  of those efforts in
<http://www.catwhisker.org/~david/FreeBSD/head/> -- ref "bw.txt" (or
"bw.txt.gz"), in case that's of interest or use.

Peace,
david
-- 
David H. Wolfskill				david at catwhisker.org
Those who would murder in the name of God or prophet are blasphemous cowards.

See http://www.catwhisker.org/~david/publickey.gpg for my public key.
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