Uri class and parser

[Adam D. Ruppe]

On Friday, 26 October 2012 at 14:13:21 UTC, Mike van Dongen wrote:
> I am however considering it because even though not (clearly) 
> defined, they are URIs and they are often used.

The basedOn function in my uri struct in cgi.d does it:
https://github.com/adamdruppe/misc-stuff-including-D-programming-language-web-stuff/blob/master/cgi.d#L1702

The unit test below the function is focused on checking the 
relative function.