Light, temporary commits for git

Current versions

git-now requires the following formula to be installed:
gnu-getopt 1.1.6 Command-line option parsing library

Formula history

ilovezfs Use “squiggly” heredocs.
Mike McQuaid Use hash rockets again. (#5177)
Mike McQuaid Use Ruby 1.9+ symbol hash keys in all formulae. (#4942)
Nikolaus Wittenstein Add descriptions to all remaining homebrew packages
Alex Dunn git-now
Jack Nagel git-now: use patch DSL
Adam Vandenberg git-now: install to libexec
Jack Nagel Detect versions in tag specs
Adam Vandenberg use bash/zsh path helpers