Pretty sure we don't need is -M and -L args

[stephen-hawley]

We don't really use those really, so consider just using the -C arg and simplifying all the code to just use search paths.

Why were they needed? For compiling references to other modules whether they came from libraries or frameworks and it was needed to be able to add -I and -L args for libraries and -F for frameworks. But the thing is, we already figure out which is which and pass in the right arguments to make-framework so this is just silly.