libproxy (proxy configuration library)

libproxy exists to answer the question: Given a network resource, 
how do I reach it? It handles all the details, enabling you to get 
back to programming.  GNOME? KDE? Command line? WPAD? PAC? Network 
changed? It doesn't matter! Just ask libproxy what proxy to use: you 
get simple code and your users get correct, consistant behavior and 
broad infrastructure compatibility. 

This requires mozjs185 and nspr.
