brew-test-bot: make an internal command.
brew-test-bot: fix error detection logic.
brew-gist-logs: make an internal command.
brew-pull: make an internal command.
brew-switch: make an internal command.
brew-aspell-dictionaries: make a developer command
Move manpage to Homebrew (from Contributions).

As this is something we support and update.
brew-tap-readme: make an internal command.
brew-cleanup-installed: Rubify, make internal cmd.
brew-man: Rubify, make an internal command.

Closes #32472.