atk: add libintlOrEmpty as build input
gdk-pixbuf: add libintlOrEmpty to build inputs
cairo: add correct include path for pixman.h
gtk2: fix compilation on darwin

* add libintlOrEmpty to build inputs
* allow cups to be disabled by setting config.gtk2.cups to false
pango: add correct cairo include path
vim_configurable: fix compilation on darwin

* compile with gccApple
* enable darwinSupport by default
* do not use patchelf
Merge pull request #617 from lovek323/vim_configurable

Get vim_configurable compiling on darwin