.gitignore: Add Windows intermediate files

[CyberShadow]

No description provided.

[JakobOvrum]

Yeah this was pretty annoying. LGTM.

[quickfur]

👍

[quickfur]

Auto-merge toggled on

[andralex]

I continue to believe that growth of .gitignore files is a symptom of a larger problem: a disorganized build process that leaves junk files left where they don't belong. Am I alone?

[cym13]

@andralex : That's exactly the comment I would have written!

[CyberShadow]

@andralex In this instance, you are right. The Phobos win32.mak is less organized in where it creates temporary files than posix.mak, but I didn't want to risk breaking things by moving things around.

[CyberShadow]

BTW, there are some entries in our .gitignore files that shouldn't be there. For example, the Makefile and GNUmakefile entries do not belong in .gitignore, they should be in .git/info/exclude. And I've no idea what the .*.sw* is for.

[schuetzm]

*.*.sw* is for the temporary files that vi creates during editing of a file.

[CyberShadow]

Those should not be in our .gitignore either. They should be in users' global .gitignore.