pidgin/pidgin

dc08416b884f
Bring back the URL escaping code, but use a better character whitelist.

I realized we can still percent-encode some characters to guard against
URLs containing $(xterm) causing xterm to start on horrendously broken
systems. We just need to be better about what characters we escape. So
I brought back Tomasz's code, added a few characters to the allowed list,
and we now use the escaped URI when starting ALL browsers. Works fine for me.
For information on writing a plugin for Purple, Pidgin or Finch, go
http://developer.pidgin.im and click on API. From there, see the
HOWTOs in the "Related Pages" section.
You can also generate this documentation locally by installing
doxygen and graphviz dot, then running "make docs" in the
source tree. The documentation will be in the docs/html directory.