(resend) Update/modernize mkchroot.sh

[Ben W. <bw...@ar...>]

Hi All,

[Sorry for the resend.  I mucked up my git send-email stuff
somehow...]

I installed rssh on a RHEL5 host yesterday and setup a chroot jail for
a special purpose account.  Although I got it running, the mkchroot.sh
script needed a bit of help to get it all done.  After figuring out
what the script was not doing for me, I modified it with the patches
that will follow this mail so that it runs without error and sets up a
working environment on RHEL5.  The changes I made _should_ be
compatible with older machines too.

I hope these patches are useful.  They're based on the 2.3.3 tarball
download as anonymous cvs at sourceforge has been disabled.

Thanks
-Ben