TEveManager::GetGeometry() - if TGeoManager is locked, unlock it on

load time and re-lock it back afterwards.

TEveGeoShape - added method SetShape() so that full object can be
constructed also in program (required loading from file before).


git-svn-id: http://root.cern.ch/svn/root/trunk@23731 27541ba8-7e3a-0410-8455-c3a389f83636