bitbake: lib: fix most undefined code picked up by pylint

Correctly import, and inherit functions, and variables.
Also fix some typos and remove some Python 2 code that isn't recognised.

(Bitbake rev: b0c807be5c2170c9481c1a04d4c11972135d7dc5)

Signed-off-by: Frazer Clews <frazerleslieclews@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/bb/__init__.py

@@ -93,7 +93,7 @@ class BBLoggerAdapter(logging.LoggerAdapter, BBLoggerMixin):
 
         def __repr__(self):
             logger = self.logger
-            level = getLevelName(logger.getEffectiveLevel())
+            level = logger.getLevelName(logger.getEffectiveLevel())
             return '<%s %s (%s)>' % (self.__class__.__name__, logger.name, level)
 
 logging.LoggerAdapter = BBLoggerAdapter