Instead of command line to avoid escaping problem.
It can support most of the character including surrogate char. It cannot
support semicolon. However, semicolon is not allow to be part of the
user name.
Port 2.1.4xx fix 0251f677ede571b61a47ca24f38df8e09038277d while keep
BaseIntermediateOutputPath instead of MsBuildProjectExtensionsPath to
minimize the change.
5218c4bcf5