[lokisetup] Building Mac version

[Ryan C. Gordon]

> I have quickly bodged it by editing the Makefile

I think that's what everyone is doing at the moment on Mac OS X. We 
should fix that.

fwiw: I don't have fink installed; I might have built libxml1 from 
source and disabled localization, though.

Also: don't forget to do "make setup.carbon" instead of plain "make" or 
you'll try to build things that don't build on the Mac.

The Mac build process isn't terribly Mac-like right now. Also worth 
fixing.  :)

On the list of dramatic changes, after switching to Subversion, might be 
switching from autotools to CMake...which will build both Unix makefiles 
and real XCode projects from fairly simplistic textfiles, solving this 
problem.

--ryan.