MacOSX now supported

After moving the unix build system over to libtool, we now are able to
build and run on MacOSX (Built on Panther, 10.3, Darwin-7.3). I left
binaries at http://www.prothon.org/pub/prothon/

The binaries install in /usr/local/. It also installs libapr-1 in
/usr/lib. You may need to update your path to execute the binary from
/usr/local/bin.

The unix build system now also supports building out of the source tree.

Because of libtool, we probably support dozens of other systems now too,
but I can't confirm that (I'd bet on Solaris and *BSD's though).

-- 
Debian     - http://www.debian.org/
Linux 1394 - http://www.linux1394.org/
Subversion - http://subversion.tigris.org/
WatchGuard - http://www.watchguard.com/