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>
gdal: fix manpage installation

Fixes #21338.
Closes #21341.
Fix String#start_with? implementation

It is supposed to accept a variable number of prefixes, and also to
check if they are convertible to strings. This matches behavior
documented in RubySpec.
Add String#end_with?

I'm tired of not remembering if start_with?/end_with? are portable, so
just add them both if they're not defined.
youtube-dl 2013.07.19

Closes #21346.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
RethinkDB 1.7.3

Release notes: https://github.com/rethinkdb/rethinkdb/releases/tag/v1.7.3

Closes #21340.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
ngIRCd 20.2

Closes #21348.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
vert.x 2.0.0

Closes #21354.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
winetricks 20130707 revision 1034.

Closes #21339.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
Wine 1.6

Now builds a Mac driver by default. See caveats to switch to X11.

Closes #21238.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
wine: remove redundant devel block
wine: simplify caveats
wine: remove another devel block
wine: style
Don't report llvm-gcc if it's actually clang
Remove unnecessary use of globals in compiler version methods