Properly handle the case where there is only one file in the list by calling Merge also in this case (for example this is necessary for TTree objects where otherwise only the meta data is copied)
Properly handle the case where there is only one file in the list by calling Merge also in this case (for example this is necessary for TTree objects where otherwise only the meta data is copied)


git-svn-id: acec3fd5b7ea1eb9e79d6329d318e8118ee2e14f@40463 27541ba8-7e3a-0410-8455-c3a389f83636

bbockelm/root-historical,bbockelm/root-historical,bbockelm/root-historical,bbockelm/root-historical,bbockelm/root-historical,bbockelm/root-historical,bbockelm/root-historical