Fix the merge for histogram with the buffer implement  also correctly TH1::GetEntries in case of buffer histograms
Fix the merge for histogram with the buffer
implement  also correctly TH1::GetEntries in case of buffer histograms


git-svn-id: ecbadac9c76e8cf640a0bca86f6bd796c98521e3@41431 27541ba8-7e3a-0410-8455-c3a389f83636

bbannier/ROOT,bbannier/ROOT,bbannier/ROOT,bbannier/ROOT,bbannier/ROOT,bbannier/ROOT,bbannier/ROOT