Large scale cleanup in shapes navigation interfaces adding const modifier for point and direction parameters passed as input arguments.


git-svn-id: https://root.cern.ch/svn/root/trunk@48928 27541ba8-7e3a-0410-8455-c3a389f83636
Copy over the fArgVals. Fixes roottest newly created tcallfunc tests.


git-svn-id: https://root.cern.ch/svn/root/trunk@48929 27541ba8-7e3a-0410-8455-c3a389f83636
Add fixme.


git-svn-id: https://root.cern.ch/svn/root/trunk@48930 27541ba8-7e3a-0410-8455-c3a389f83636