gcc 4.9.1: Fix config-ml.in: 160: unexpected EOF

See https://gcc.gnu.org/ml/gcc-patches/2014-03/msg00718.html

Closes Homebrew/linuxbrew#154
Linuxbrew: Add MANPATH and INFOPATH to README.md

Ensure that the man and info pages shown by 'man bash' and 'info bash'
represent the program run by 'bash' (for example).

Closes Homebrew/linuxbrew#155
git-flow-avh: fix zsh zsh_completion.
git-flow-avh: Support Linux systems.
git: only show OS X keychain caveat on OSX systems.