Catch IOError which is thrown by OS X

This error comes up easily becuase fc-list is a X11 program, which is
missing or misconfigured on OS X.
Closes 1752. Patch3DCollection can now be empty.

Also improved the Patch3DCollection constructor.
forward keyword args though table
Closes #1079. Allow iterables for Line3DCollection
Update the coding guidelines wrt to docstrings and MEP10
Merge pull request #2162 from WeatherGod/mplot3d/empty_patch3dcollection

[SPRINT] Closes #1752. Patch3DCollection can now be empty.
added test for table zorder
Added missing '#'; when starting ipython, I was getting the following message:
Bad key "text.hinting_factor" on line 184 in
/home/marianne/.matplotlib/matplotlibrc.
You probably need to get an updated matplotlibrc file from
http://matplotlib.sf.net/_static/matplotlibrc or from the matplotlib source
distribution
Merge pull request #2173 from mdboom/docstring-coding-guidelines

[Sprint] Update coding guidelines wrt documentation
Merge pull request #2172 from WeatherGod/mplot3d/iter_collections

[SPRINT] Closes #1079. Allow iterables for Line3DCollection
Merge pull request #2178 from mkcor/fix_commentout_mplrc

Commented line which was meant to be commented in the matplotlibrc.template
Fix for generating documentation

- Introduced a syntax error in PR #2161, whoops!
Merge pull request #2179 from tbekolay/doc_fix

Fix for generating documentation
Added mplot3d tests in mpl_toolkits.tests

- This complements PR #2135
- Also tests issue #1933, which was fixed but untested
- Also changes the remove_text decorator,
  to remove text on the z-axis.
Merge pull request #1931 from NelleV/axes_module

[SPRINT] Refactored the axes module to split it in smaller chunks.
Merge pull request #2177 from tbekolay/mplot3dtests

[sprint] Added mplot3d tests in mpl_toolkits.tests
remove_text=True to test to testing issues
Merge pull request #2154 from torcolvin/master

catch fontconfig errors on OS X
DOC moved barh to new style MEP10 documentation
DOC added links between the barh documentation and the bar documentation