problems with v3

[Tom Tromey]

Roland> However, I think the test you probably want is !S_ISCHR.

Thanks.  I wasn't sure.

Roland> Actually, better yet, just make it !isatty (fd).

Ok.

I made a new branch, 'archer-ugdb'.
This patch is there.  (Actually 2 patches due to me not reading
carefully enough the first time -- but whatever.)

Oleg, use this branch and give the feature a try.
We can push whatever fixes or hacks you need to this branch.
I can also merge from gdb's master as needed.

Tom