wininet: Support http_proxy environment variable

[Tobias Burnus]

Hi,

Dimi Paun wrote:
> On Thu, 2006-08-10 at 13:33 +0200, Francois Gouget wrote:
>> There may also be a way to specify a password ('user%password at ...'?).
> 
> Format is:
>     [user[:password]@]hostname[:port]

If I google for http_proxy, I always find this additionally prefixed by
"http://". Some have even an additional slash at the end.
(This is also the format which works here with Lynx and wget.)

Note that one should also support  no_proxy (comma separated list of
hostnames, e.g. "il" (matching e.g. ".mil" and ".il"), ".winehq.org" etc.)

Maybe ftp_proxy should be supported as well?

Tobias