fpvectorial: Advances the odg drawer

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@39828 4005530d-fff6-0310-9dd1-cebe43e6787f
SourceEditor: Improve session restore, if more than 2 windows were used.

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@39829 4005530d-fff6-0310-9dd1-cebe43e6787f