Replace ack-grep with ag, it's faster.
Remove Cygwin support (clean up).
Remove unused aliases (clean up).
Remove unused Metacity support.
Remove Java support, it's unused.
Remove unused Bash functions.
Remove MySQL support, it's unused.
Remove ssh support, it's unused.
Remove unused env variables.
Remove nano support, it's unused.
Remove CPAN support, it's unused.
Remove SVN support, it's unused.
Simplify ssh-add auto-start.