[Request] IntroJucer C++ Library Options

Hi - I have a small request for the IntroJucer, specifically, I want to be able to specify GNU C++ standard library (libstdc++) in IntoJucer as the C++ Library. This library, though available in XCode5, is not available in IntroJucer.  Therefore, whenever I make a change to the IJ project file, I must remember to update this in the XCode Build Settings.  It is only a minor inconvenience, but I think it would be an easy enough fix in the IntroJucer to include all of the C++ Standard Libraries that are supported in XCode.

Thanks :)

Pretty sure it already has an option for that..(?)