The treatment of a:/foo in cgf's sandbox

[Christopher Faylor <cgf at redhat dot com>]

As it turns out, it is moderately hard to get the DLL to do something like
'Treat a:/foo' as ./a:/foo in certain directories'.  So, for now, I've
fallen back to requiring that if you want to reference something that
looks like a drive in the current directory, you have to prefix the
path with ./.  That means that a:/ still has its usual meaning.

This actually feels right to me.  I wasn't wild about the fact that you
couldn't access the a: drive via MS-DOS syntax in "special" directories.

cgf