Enable superenv on Snow Leopard

This has been tested with several dozen formulae without any
superenv-related issues.
little-cms: fix universal build
denominator 3.2.0

Closes #21336.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
little-cms{,2}: make jpeg and libtiff recommended

These deps provide basic functionality and take very little time to
build so they may as well be enabled by default.
passenger 4.0.5 (new formula)

Closes #19981.

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