- When the 1D histograms in a stack are painted with patterns or hatches   the histogram is first painted with the TFrame background color to avoid   the hatches overlaps. In case the TFrame background color is 0 this did not   work because in that case the histogram is hollow. Instead of 0 we now use   10.
- When the 1D histograms in a stack are painted with patterns or hatches
  the histogram is first painted with the TFrame background color to avoid
  the hatches overlaps. In case the TFrame background color is 0 this did not
  work because in that case the histogram is hollow. Instead of 0 we now use
  10.


git-svn-id: acec3fd5b7ea1eb9e79d6329d318e8118ee2e14f@39265 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