Added possibility to prevent known overlaps produced by misalignment by...

Added possibility to prevent known overlaps produced by misalignment by assignig priority to one of the candidates. This is not using the error prone AddNodeOverlap method, but composite shapes. One has to create the unprioritized shape as the subtraction of the original one and the shape of the node to prioritize, then position this composite shape colume with identity matrix. The prioritized volume should be added as node using the same local matrix as the one used in the subtraction operation. The matrix itself has to be declared shared via SetShared() method. Added few parameters to the RandomRays method.


git-svn-id: http://root.cern.ch/svn/root/trunk@47228 27541ba8-7e3a-0410-8455-c3a389f83636