Improve the FindBranch and FindLeaf so that TTreeFormula finds an existing branch even in the presence of base classes (The consequence is that it was using the top level branch instead of the lower level branch.  See https://savannah.cern.ch/bugs/?25675
Improve the FindBranch and FindLeaf so that TTreeFormula finds an existing branch even in the presence of base classes (The consequence is that it was using the top level branch instead of the lower level branch.  See https://savannah.cern.ch/bugs/?25675


git-svn-id: ecbadac9c76e8cf640a0bca86f6bd796c98521e3@18563 27541ba8-7e3a-0410-8455-c3a389f83636

bbannier/ROOT,dawehner/root,dawehner/root,bbannier/ROOT,dawehner/root,bbannier/ROOT,bbannier/ROOT,dawehner/root,bbannier/ROOT,bbannier/ROOT,bbannier/ROOT,dawehner/root,dawehner/root,dawehner/root,dawehner/root