Build fixes (#118 and #119)

[jcowgill]

These are the fixes I've used to get python-sfml building again on my machine. I'll probably apply the one relating to Cython 0.23 to the Debian package in a moment.

[firefly2442]

👍

[ghost]

Hello @jcowgill, when I try to import your special build-fixes I get the following errors:

>>>from sfml import sf
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib/python3.5/site-packages/sfml/__init__.py", line 1, in <module>
    import sfml.system
ImportError: /usr/lib/python3.5/site-packages/sfml/system.cpython-35m-x86_64-linux-gnu.so: undefined symbol: _Z15Time_idiv_floatRN2sf4TimeEf

I'm trying to use it on Manjaro Linux (stable, I only took python3.5 from unstable).

[jcowgill]

Hi @Erwhann-Rouge, that error is the same as issue #122. I'll have a look at it.

[jcowgill]

These seem to be fixed now.