it supplies zlib, doesn't supply a pkgconfig file for it, so we don't
want it to say "requires zlib".
This script is part of the Wireshark source, so giving "download
Wireshark source" as the next step doesn't make sense.
svn path=/trunk/; revision=38055
"macos", to fix some bugs, to use "sudo" if necessary when installing,
to make the library version numbers variables, and to download the
optional libraries, by default, as well. Also add his patches to make
GLib build and work.
Update README.macos to reflect that.
svn path=/trunk/; revision=38053