[Mono-osx] Splitting MacOS installer into Runtime and SDK

[Miguel de Icaza]

> -- The /share/icons directory is ridiculously huge. Can icons be
> packed into arbitrary .zip or .tar files? The JVM guys do this with
> their .class files to keep the number of files lower.

I agree that it is too large, but I do not really know what depends on
it and what can be safely removed without breaking Gtk+ applications.

We would need to check with someone who knows better than I do.