[Xmonad] user Config.hs with freebsd's xmonad port

[Don Stewart]

clawsie:
> there is a freebsd port for xmonad as of oct 25
> 
> one small issue - no ability to pass one's own Config.hs through to
> the build process automatically. the following patch got the port
> Makefile, which i have submitted to the port maintainer, will provide
> this ability:
> 
> > pre-everything::
> >       @${ECHO_MSG} "To build xmonad with your own Config.hs, use the
> >       XMONAD_CONF setting:"
> >       @${ECHO_MSG} "make XMONAD_CONF=/path/to/dwm/Config.hs install
> >       clean"
> >
> > post-extract:
> > .if defined(XMONAD_CONF)
> >       @${ECHO_MSG} "creating Config.hs from ${XMONAD_CONF}"
> >       @${ECHO_MSG} "wrksrc: ${WRKSRC}"
> >       @${CP} ${XMONAD_CONF} ${WRKSRC}/Config.hs
> > .endif
> 
> be careful cutting and pasting this if your environment changes tabs
> to spaces
> 

Great work!

-- Don