Platform Independent Interface for Network Proxies

Implements a Proxy detection (WPAD) interface for Linux, Mac OSX and
Windows. Offers a GUI for manual proxy settings and automatic WPAD
detection. Makes use of http://code.google.com/p/libproxy/ on Linux
and Mac OSX, and uses WinHTTP on Windows. The GUI is based on Qt4 and
Qt5.

For more details, see:
https://dev.marc.waeckerlin.org/redmine/projects/proxyface
