tcsh and Ultrix 4.2

[Burkhard Neidecker-Lutz]

There is a bug in tcsh that is triggered under Ultrix 4.2. The 4.2
prompter sets the close-on-exec flags on file descriptors 0,1 and 2
and tcsh gets confused when it tries to get around the closed descriptors.
(i.e. the reopening code is broken). My login shell is tcsh under
4.2, but we patched tcsh. I didn't do the patch, I will have to check
with the author of it whether it's ok to post it.


				Burkhard Neidecker-Lutz
				Digital CEC Karlsruhe
				Project NESTOR