64-bit Windows version

I see that the 3.0 Windows builds (both 32 and 64-bit) do not contain clm. This repository has a Makefile.windows-x86, which is used in the nightly build scripts for both 32 and 64-bit. It seems that the 64-bit version is broken, because it looks in the wrong place for the compiler (Clean System\CleanCompiler.exe instead of Clean System 64\CleanCompiler64.exe). Or is there a patchbin trick that I'm not aware of?

I did not check whether the 32-bit version works.

It would be good to have a clm on 64-bit Windows so that we can run automated tests on Platform. @johnvg, do you think this is feasible (is it only paths like this that must be changed or do you foresee other problems)? I'm happy to do this, but am not going to spend time on it if it would be easier to change the test framework to use cpm.