ProgVal/Limnoria — pull request #579 by skgsergio (2014-04-01 18:27:33+00:00)
Title: Fix AttributeError exception in log.py with python3.4

This fixes an AttributeError introduced with a change of the logging module in python 3.4.

I've not tested Limnoria with python 3.3 (only 3.2 and 3.4), so I don't know if this issue is present in 3.3.

Sorry for the dupe PR, I've forgot to open it to testing and not to master.

```
Traceback (most recent call last):
File "/home/sconde/.local/bin/supybot", line 208, in
import supybot.log as log
File "/home/sconde/.local/lib/python3.4/site-packages/supybot/log.py", line 253, in
increasing priority."""))
File "/home/sconde/.local/lib/python3.4/site-packages/supybot/conf.py", line 81, in registerGlobalValue
return group.register(name, value)
File "/home/sconde/.local/lib/python3.4/site-packages/supybot/registry.py", line 268, in register
node.setName(fullname)
File "/home/sconde/.local/lib/python3.4/site-packages/supybot/registry.py", line 350, in setName
self.__parent.setName(*args)
File "/home/sconde/.local/lib/python3.4/site-packages/supybot/registry.py", line 238, in setName
self.set(_cache[name])
File "/home/sconde/.local/lib/python3.4/site-packages/supybot/log.py", line 212, in set
level = logging._levelNames[s]
AttributeError: 'module' object has no attribute '_levelNames'
```