D-Programming-Language/phobos — pull request #2421 by Dicebot (2014-08-13 04:07:08+00:00)
Title: Simplify string escaping in win64.mak

I am not 100% sure what was rationale for original approach but it was causing problems with unqualified paths
like `CC=cl`. New version seems to work for me in both cases but I'd like someone who actually uses Windows to check.