Fran broken with Feb 2001 Hugs

[Conal Elliott]

Hi Sean.  Some bad news.  The Feb'01 Hugs release has a representation
change for IO, breaking Fran's Compatibility.safeTry, which I had copied
from Alastair Reid's graphics library.  I noticed that the graphics
library is broken for the same reason.  I worked around that problem,
but then I get "Program error: no more threads (deadlock?)" on even the
most trivial Fran example.  That kind of error is usually very hard to
track down.

Hugs-bugsers: any guesses about the thread deadlock problem?  Also, as a
possible temp solution for Sean, is the previous version of Hugs still
available somewhere?  Thanks,

	- Conal