Cast deps to formula before passing them to superenv

Dependency names retain the "tap prefix", e.g. the "homebrew/dupes"
part of "homebrew/dupes/zlib". However formula objects do not, and this
is desired because we do not record the tap name as part of the
installation prefix.

So we need to ensure the correct dep names are passed to superenv,
otherwise it will not add the correct directories to various environment
variables.
Plowshare 3.GIT-c289008

Closes #20396.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
Caudec: update deps

* remove optional gnutls
* add optional coreutils for additional accuracy

Closes #19577.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
openvpn 2.3.2

Closes #20398.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
Vim & MacVim: Fix support for brewed python

However, the downside is that we had to remove python3
support until that is fixed upstream.
cmake 2.8.11.1

Closes #20407.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
cmake 2.8.11.1 bottles
doctor: add check for osx-gcc-installer

This might not detect all cases, but should detect the two most
common ones.
rust: --HEAD uses incoming branch, not master

Closes #20409.

Signed-off-by: Samuel John <github@SamuelJohn.de>
git 1.8.3.1

Closes #20402.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
sqlite: fix download filename of functions

Closes #20412.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
Dart 23799

Closes #20411.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
proxychains-ng: 4.5 and --HEAD

New formula.

Signed-off-by: Samuel John <github@SamuelJohn.de>
dart: fix test
nginx: use correct openssl for SPDY

Closes #20404.
Fixes #20336.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
nginx: options come before deps
proxychains-ng: fix url
Add doctor check for OS X > 10.8
Recognize OS X 10.9 and Xcode 5.0

Closes #20410.
Closes #20401.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
sqlite: style nit