#136 Fix testing with pypy

[Mathy Vanvoorden]

Some of the tests are broken when using PyPy:
* The backport of the csv_eod_error_str never happened in pypy so I added an extra check for this
* The exception thrown when trying to parse a string as integer was outputting the u to identify it as a unicode string which did not match the expected output (see below). I added a u identifier to the string which solves it.

Example:
- invalid literal for int() with base 10: 'fifty'.
+ invalid literal for int() with base 10: u'fifty'.

Tested with
* python-2.7.10
* python-3.4.3
* python-3.5.2
* pypy-5.4.1
* pypy3-5.5.0_alpha

I don't have earlier python versions available for testing.

[Mathy Vanvoorden]

Sorry about the formatting, not used to this tracker ;-)

[Günter Milde]

The patch fails with Python 2.5:

Traceback (most recent call last):
  File "/home/milde/Code/Python/docutils-svn/docutils/test/alltests.py", line 79, in <module>
    suite = suite()
  File "/home/milde/Code/Python/docutils-svn/docutils/test/alltests.py", line 68, in suite
    'test_', packages=1)
  File "/home/milde/Code/Python/docutils-svn/docutils/test/package_unittest.py", line 101, in loadTestModules
    module = import_module(mod)
  File "/home/milde/Code/Python/docutils-svn/docutils/test/package_unittest.py", line 132, in import_module
    mod = __import__(name)
  File "/home/milde/Code/Python/docutils-svn/docutils/test/test_parsers/test_rst/test_directives/test_tables.py", line 40, in <module>
    platform.python_implementation() == 'PyPy' or not (
AttributeError: 'module' object has no attribute 'python_implementation'

[Günter Milde]

A version of the patch that works with 2.5 and 2.4 is now in (rev. 7976).

Please test and close the ticket if OK.

[Günter Milde]

Closing now. Please reopen if there are remaining problems.

Thank you for report and patch.