TMSCX*.GROUPPROJ missing

[brunofierens]

1. The installer should normally do all what is needed to install and no more manual compilation steps should be necessary.
   
   2. If for some reason, you still want to do manual steps, you need to use MSBUILD to build the packages.
   http://docwiki.embarcadero.com/RADStudio/Rio/en/Building_a_Project_Using_an_MSBuild_Command