Modified master build script to use VS140COMNTOOLS as the path for devenv and mstest.
Modified master build script to use VS140COMNTOOLS as the path for devenv and mstest.

GridProtectionAlliance/gsf,rmc00/gsf,GridProtectionAlliance/gsf,rmc00/gsf,GridProtectionAlliance/gsf,GridProtectionAlliance/gsf,rmc00/gsf,rmc00/gsf,rmc00/gsf,rmc00/gsf,GridProtectionAlliance/gsf,GridProtectionAlliance/gsf,GridProtectionAlliance/gsf,rmc00/gsf,GridProtectionAlliance/gsf