ReactiveCocoa/ReactiveCocoa — pull request #1224 by jonnolen (2014-04-03 17:25:25+00:00)
Title: Replace OSAtomicIncrement/Decrement32Barrier with OSAtomicAdd32Barrier

fix issue with running on iOS 7.0 devices with application built against iOS 7.1 sdk. OSAtomicIncrement32Barrier and OSAtomicDecrement32Barrier cause a dyld: lazy symbol binding failed: Symbol not found: _OSAtomicIncrement32Barrier error in this case on iOS 7.0. resolves #1223