[PATCH] [analyzer] Support spaces in compiler path and arguments.

[Антон Ярцев]

Finally addressed issues with arguments. I had a patch for D8774 <http://reviews.llvm.org/D8774> (Prevent ccc/c++-analyzer from hanging on Windows) applied locally (because I was unable to use scan-build without that patch) and that was the reason for the arguments being processed differently .
I replaced all calls to 'system' and 'exec' (that pass arguments to the system's command shell for processing) with calls to pipe form of 'open' and this solution worked consistently under Windows 7, OS X, Ubuntu and different Windows perl ports. Merged this patch with D8774 <http://reviews.llvm.org/D8774>. Please review!


http://reviews.llvm.org/D9357

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