[request] --set-preprocessor-definitions command line argument for Projucer

Can we please get a --set-preprocessor-definitions argument for the Projucer.

I’m writing a build script for my projects and want to be able to specify things like TRIAL_MODE=1 without the need to do it manually.

+1 this would be very useful, does anyone know if there is a way to do something like this with currently msbuild and xcodebuild?