IPv6 address links pass badly formatted URLs to the default browser

[nevlik]

Adium takes this IPv6 URL:

 http://[2001:470:1f05:471:240:8cff:fe6b:5446]/view/index.shtml

and sends it to Firefox. Firefox displays:

 http://www.[2001.com:470/view/index.shtml

as the URL in the address bar. I've tested without the /view/index.shtml, and Firefox shows:

 http://www.[2001.com:470/

Bad regex parse?

[earthmkii]

This is a 2 part bug:

1. We're being a little overaggressive escaping URIs to avoid i8n domain name fishing, and the brackets containing the IPv6 address are getting escaped
2. Firefox doesn't recognize the escaped IPv6 address and freaks out. (the truncation doesn't happen with Safari)

I'll see about working around escaping IPv6 address part of the URIs.

[sholt]

(In [25145]) Don't escape the characters ' and ?' for IPv6 addresses. Refs #11031.

[sholt]

(In [25146]) Merging r25145 into the 1.3 branch. Fixes #11031.