pan from rawhide, modified

[Michael A. Peters]

Took latest pan from rawhide cvs and imported into extras
updated version to new upstream version
removed patches fixed in new upstream
added gcc4 patch (won't build w/o it)
removed gnet2 source - gnet2 in extras, BuildRequires gnet2-devel
removed explicit library requires, redundant BuildRequires
fedora extras style desktop-file-install
changes noted in changelog

builds in mock, rpmlint clean
Any objections to requesting a build for FC-4?