Converter: save the log messages also to a file.

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@41640 4005530d-fff6-0310-9dd1-cebe43e6787f
IDE+lazbuild: add compiler parameter -WR only for Windows

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@41641 4005530d-fff6-0310-9dd1-cebe43e6787f