Win-Installer:  ability to create secondary installations.

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@42517 4005530d-fff6-0310-9dd1-cebe43e6787f
Win-Installer:  ability to create secondary installations.

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@42518 4005530d-fff6-0310-9dd1-cebe43e6787f