Tunnel SSH through HTTP proxies

Current version

corkscrew requires the following formula to be installed:
libtool 2.4.6_1 Generic library support script

Formula history

ilovezfs corkscrew: use Debian for homepage and url (#14364)
Mike McQuaid Use hash rockets again. (#5177)
Mike McQuaid Use Ruby 1.9+ symbol hash keys in all formulae. (#4942)
Xu Cheng corkscrew: add test
Nikolaus Wittenstein Add descriptions to all remaining homebrew packages
Jack Nagel Provide compatibility with libtool 2.4.2 and 2.4.3+
Jack Nagel corkscrew: copy new config.guess from libtool