Rewrote configure.ac according to my new l33t knowledge of autotools, and

removed obsolete macros.

Now, after checking out a new revision, use the command:
autoreconf --install --force
instead of autogen.sh to rebuild all the platform-specific files.

git-svn-id: http://lassie.dyndns-server.com/svn/gargoyle-gtk@30 ddfedd41-794f-dd11-ae45-00112f111e67