[AC-1739] Building custom modules fails with iOS 6 and Xcode 4.5 if originally created in environment prior to xcode 4.3

Building custom iOS modules in this environment fails are the armv6 arch is not supported by xcode 4.5 So a ./build.py gives Build settings from command line: SDKROOT = iphoneos6.0 === BUILD NATIVE TARGET testflightti OF PROJECT testflightti WITH CONFIGURATION Release === Check dependencies warning: no rule to process file '$(PROJECT_DIR)/Classes/Module.m' of type sourcecode.c.objc for architecture armv6 warning: no rule to process file '$(PROJECT_DIR)/Classes/ModuleAssets.m' of type sourcecode.c.objc for architecture armv6 ** BUILD SUCCEEDED ** The build succeeded is wrong. The simulator build succeeds and so works on simulator, but error only evident when tested on a device. The main issue I suppose is that there is a build succeeded message. New projects seem to be okay.