Remove lower casing in PathMakeStandard

[kudaba]

I noticed that in my fork I have two commits for disabling this. The first was when I got it running in .net core I had to disable it for linux systems. And second time I added a user option to disable it completely since it was breaking tt files on windows. Is there a particular reason you want to force lower case on the filenames on windows where the case doesn't matter anyway?

I've been running with it completely disable for some time and haven't noticed any issues that I can recall.

[belkiss]

Heya!
Not really, I've been trying to make sharpmake case correct for some time (with the introduction of the FileSystemComparer etc.), and slowly getting there :)

[kudaba]

In that case I'll remove my change that adds a user option and just remove the casing code entirely and make a pr for it

[BrokenMarkus]

This was quite some time ago. How are things going on the case correct work?