regexec potentially broken

[Sam Hartman <hartmans@mekinok.com>]

I haven't really gotten a chance to look at this, mostly just playing
around.

I was able to build ed (wanted some sort of reasonable text editor)
but it didn't work.  Whenever I attempt to make a substitution, it
dumps core in regexec.    I should build a debugging libc, debugging
ed, etc.

As a side note, it would be cool if we could get libeditline,
libtermcap added to the chroot so gdb runs in the chroot.  If your
system libc isn't quite the same as the chroot libc, you can get
strange results when trying to gdb core files produced in the Debian
land.

--Sam