Inheriting from object was necessary for Python 2 compatibility to use
new-style classes. In Python 3, this is unnecessary as there are no
old-style classes.

Dropping the object is more idiomatic Python.

As numpy is Python 3 only, these import statements are now unnecessary
and don't alter runtime behavior.

* Review F401,F841,F842 flake8 errors (unused variables, imports)

* Review comments

* More tests in test_installed_npymath_ini

* Review comments

That function is nose specific and has not worked since `__init__` files
were added to the tests directories.

Also rename some classes that should not begin 'Test'.

Closes gh-7707.  Happened for `pip install .` or another location (including a
remote git repo).

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.

the configuration variables are not a reliable mean to get the shared
library extension. darwin, windows and debug linux are wrong in these
variables.
SHLIB_SUFFIX is also wrong as of python 3.3.1
closes #3057