From Andrei:

few modifications including a fix to a serious problem: in my last patch
for TGeoPatternFinder.cxx class I removed by mistake a line resulting in the fact that
no division on Z axis is seen anymore by tracking!!


Few other modifications:
- TGeoManager::Edit() to invoke the geometry builder plugin if existing (Mihaela)
- few fixes in the painter for the case when the geometry is not closed
- a small correction in TGeoManager related to MANY's


git-svn-id: http://root.cern.ch/svn/root/trunk@14832 27541ba8-7e3a-0410-8455-c3a389f83636