Fix silly lack-of-API problems in logging module
 
Adds constants to the log objects.
Adds getException(err) to log objects to retrieve 
formatted exception or err if traceback not available.

Modules
		logging traceback

Classes
		object _LoggedFunction _ErrorLoggedFunction _FullLoggedFunction   class _ErrorLoggedFunction(_LoggedFunction)     On-error-logged function wrapper     Method resolution order: _ErrorLoggedFunction _LoggedFunction object Methods defined here: __call__(self, *args, **named) Methods inherited from _LoggedFunction: __getattr__(self, key) __init__(self, base, log) __setattr__(self, key, value) Data descriptors inherited from _LoggedFunction: __dict__ dictionary for instance variables (if defined) __weakref__ list of weak references to the object (if defined)   class _FullLoggedFunction(_LoggedFunction)     Fully-logged function wrapper (logs all call params to OpenGL.calltrace)     Method resolution order: _FullLoggedFunction _LoggedFunction object Methods defined here: __call__(self, *args, **named) Methods inherited from _LoggedFunction: __getattr__(self, key) __init__(self, base, log) __setattr__(self, key, value) Data descriptors inherited from _LoggedFunction: __dict__ dictionary for instance variables (if defined) __weakref__ list of weak references to the object (if defined)   class _LoggedFunction(object)     Proxy that overrides __call__ to log arguments     Methods defined here: __getattr__(self, key) __init__(self, base, log) __setattr__(self, key, value) Data descriptors defined here: __dict__ dictionary for instance variables (if defined) __weakref__ list of weak references to the object (if defined)

Functions
		StringIO(...) StringIO([s]) -- Return a StringIO-like stream for reading or writing getException(error) Get formatted traceback from exception logOnFail(function, log) Produce possible log-wrapped version of function   function -- callable object to be wrapped log -- the log to which to log information   Uses ERROR_LOGGING and FULL_LOGGING to determine whether/how to wrap the function.

Data
		ERROR_LOGGING = False FULL_LOGGING = False __file__ = '/tmp/buildd/pyopengl-3.0.0~b6/OpenGL/logs.py' __name__ = 'OpenGL.logs'