convert_libraries chokes on Posix.hsc

[Levent Erkok]

Typing "make" on a freshly checked out hugs yields:

............
Converting base/Text/Regex/Posix.hsc
/usr/local/ghc-5.04/bin/i386-unknown-linux/hsc2hs: /hsc2hs-bin: No such file or directory
sed: can't read ../../libraries/Text/Regex/Posix.hs: No such file or directory
Converting base/Text/Show.hs
............

everything else goes fine..

(apologies if this is a local problem on my machine. The ghc installation 
being used is right out of the linux binary bundle. If I'm having this problem, 
others might be getting into trouble as well.)

-Levent.