[project @ 2001-03-27 10:32:42 by simonmar]

Config.hs no longer contains any absolute directories.  The only
absolute directory it knows about is always passed in from the
mini-driver in the -B<dir> flag.

This setup is pretty fragile for booting from .hc anyway because
Config.hs contains platform-specific info, but it'll work enough to
get the compiler booted.