url.parse does not parse hostname correctly if path starts with colon character

[misterdjules]

A URL such as protocol://user@somehost.com:foo/bar is parsed correctly with node v0.11.14:

➜  v0.12 git:(v0.11.14-release) ✗ ./node --version
v0.11.14
➜  v0.12 git:(v0.11.14-release) ✗ ./node -p "require('url').parse('http://user@somehost.com:foo/bar')"
{ protocol: 'http:',
  slashes: true,
  auth: 'user',
  host: 'somehost.com',
  port: null,
  hostname: 'somehost.com',
  hash: null,
  search: null,
  query: null,
  pathname: '/:foo/bar',
  path: '/:foo/bar',
  href: 'http://user@somehost.com/:foo/bar' }

but is parsed incorrectly as of node v0.11.15:

➜  v0.12 git:(v0.11.14-release) ✗ ➜  git checkout v0.11.15-release
➜  v0.12 git:(v0.11.14-release) ✗ ./node --version
v0.11.15
➜  v0.12 git:(v0.11.15-release) ./node -p "require('url').parse('http://user@somehost.com:foo/bar')"
{ protocol: 'http:',
  slashes: true,
  auth: 'user',
  host: 'somehost.com:foo',
  port: null,
  hostname: 'somehost.com:foo',
  hash: null,
  search: null,
  query: null,
  pathname: '/bar',
  path: '/bar',
  href: 'http://user@somehost.com:foo/bar' }

The breaking change is 6120472 and has been partially reverted in io.js.

Among other things, it breaks npm dependencies that use git+ssh:

$ npm install git+ssh://git@github.com:npm/npm
npm ERR! git clone ssh://git@github.com:npm/npm Cloning into bare repository '/Users/JulienGilli/.npm/_git-remotes/ssh-git-github-com-npm-npm-712d6d60'...
npm ERR! git clone ssh://git@github.com:npm/npm ERROR: Repository not found.
npm ERR! git clone ssh://git@github.com:npm/npm fatal: Could not read from remote repository.
npm ERR! git clone ssh://git@github.com:npm/npm 
npm ERR! git clone ssh://git@github.com:npm/npm Please make sure you have the correct access rights
npm ERR! git clone ssh://git@github.com:npm/npm and the repository exists.

[misterdjules]

Fixed by de5f24a.