Issue: _exec_command function doesn't close 'so_dup' and 'se_dup' file
descriptors.SciPy try to build scipy\special\amos\zunik.f and
crash:error: Command "C:\Program Files (x86)\Intel\Composer XE
2015\bin\intel64\ifort.exe /nologo /MD /nbs /names:lowercase
/assume:underscore /O1
-IC:\Python27\lib\site-packages\numpy\core\include -c /c
scipy\special\amos\zunik.f
/Fobuild\temp.win-amd64-2.7\scipy\special\amos\zunik.o" failed with
exit status -1073741502

Most of these fixes involve putting blank lines around

.. versionadded:: x.x.x

and

.. deprecated:: x.x.x

Some of the examples were also fixed.

Was in numpy/distutils/exec_command.py.
Update 1.10-notes.rst.

This is to make it easier to find and remove deprecated features.
It would be a good idea if all deprecations were made with similar
comments.

Run the 2to3 ws_comma fixer on *.py files. Some lines are now too long
and will need to be broken at some point. OTOH, some lines were already
too long and need to be broken at some point. Now seems as good a time
as any to do this with open PRs at a minimum.

In Python3 `dict.items()`, `dict.keys()`, and `dict.values()` are
iterators. This causes problems when a list is needed so the 2to3 fixer
explicitly constructs a list when is finds on of those functions.
However, that is usually not necessary, so a lot of the work here has
been cleaning up those places where the fix is not needed. The big
exception to that is the `numpy/f2py/crackfortran.py` file. The code
there makes extensive use of loops that modify the contents of the
dictionary being looped through, which raises an error. That together
with the obscurity of the code in that file made it safest to let the
`dict` fixer do its worst.

Closes #3050.

Add `print_function` to all `from __future__ import ...` statements
and use the python3 print function syntax everywhere.

Closes #3078.