Refs #10694. MantidPlot tests are run serially. Using cmake --build
Refs #10694. attempting to update windows build script
Refs #10694. fix errors in buildscript.
Refs #10694. cmake won't rerun after it was just configured.
Refs #10694. fix buildscript.bat
Refs #10694. Revert buildscript.bat back to msbuild.
Refs #10694. add missing period.
Merge pull request #87 from mantidproject/feature/10694_use_run_serial

Without the big changes to the windows build script this is finally good.