Fix including Type 42 fonts in PDF on Python 3.x
Merge pull request #1978 from mdboom/type42-python3

Setting font type using rcParams does not work under Python 3.*
Fix #1985: Horizontal histograms are created with the wrong arguments
Merge pull request #1985 from mdboom/horizontal-histogram

horizontal histogramm doesn't work in 1.2 branch
Fix #1991 and #1828.  Integer overlow on Python 3 causes a crash.  Adds a test.
Merge pull request #1991 from mdboom/ticker-overflow

bugfix for matplotlib/ticker.py (python 3.3)