A library handling all the details of proxy configuration

libproxy offers the following features:

* extremely small core footprint (< 35K)
* no external dependencies within libproxy core
(libproxy plugins may have dependencies)
* only 3 functions in the stable external API
* dynamic adjustment to changing network topology
* a standard way of dealing with proxy settings across all scenarios
* a sublime sense of joy and accomplishment

Non-default rpmbuild options:
--with webkit: Enable WebKit-gtk support