Add support for Visual Studio Express 2013 for Desktop.
Add support for Visual Studio Express 2013 for Desktop.

The findMsvcCompiler() now falls back to using x86_amd64 compiler if there
is no native amd64 compiler as WDExpress2013 doesn't include a native x64
bit compiler.

lewissbaker/cake,lewissbaker/cake,lewissbaker/cake,lewissbaker/cake