Allow (via the option kIgnoreMissingTopLevel) for the TTreeCloner to handle the case where the output TTree has more top level branches than the input TTree (this is usefull in case of 'horizontal' merging of TTrees and/or the case of copy and add.)
Allow (via the option kIgnoreMissingTopLevel) for the TTreeCloner to handle the case where the output TTree has more top level branches than the input TTree (this is usefull in case of 'horizontal' merging of TTrees and/or the case of copy and add.)


git-svn-id: acec3fd5b7ea1eb9e79d6329d318e8118ee2e14f@37920 27541ba8-7e3a-0410-8455-c3a389f83636

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