Revert "nginx: use Homebrew passenger."

This reverts commit ff5922d546ad4769b39c72a6fb640a9b83182bb5.
dovecot: optionally use clucene.

References #26100.
Closes #26102.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
dovecot: cleanup caveats.
percona-server 5.6.15-rel63.0

Closes #26131.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
phantomjs: add patch to fix deprecation warning.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
phantomjs: update 1.9.6 bottle.

Closes #26138.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>