Add condStore() convenience methods to the alg/tool python base classes,
to go with the existing detStore and evtStore.

Remove earlier workaround for std::stream dictionary issues.
The workaround is now causing warnings in the python 3 build.
If the original issue recurs, will need to try to find
a different way to address it.

Enable flake8 for all python modules and make them compliant.

Was seeing Error messages from CreateRealData about std::stream objects,
that were triggered by trying to create a dictionary for
GaudiPython::CallbackStreamBuf.
This can be avoided by touching this dictionary earlier.

Initial python3 port.  Not yet meant to be complete; only enough to run
basic athena/configuration jobs.

beginRun and endRun are no longer supported by Gaudi.
Fixes test failures.



Former-commit-id: 1a0d5ef0

Fix PyAthenaAlg to take into account EventContext-related interface changes
in the Algorithm base classes.


Former-commit-id: 3cb1cdbc

	* python/Bindings.py: Protect IThinningSvc.RemovedIdx assignment
	(needed by ROOT 6).
        * Tag AthenaPython-00-06-39

2014-11-26  Karsten Koeneke  <karsten.koeneke@cern.ch>

	* python/PyAthenaComps.py: Move to new ICutFlowSvc.
        * Tag AthenaPython-00-06-38

2014-11-13 Will Buttinger <will@cern.ch>
        * src/PyAthenaAlg.cxx and PyAthenaComps.py : added resetExecuted method callthrough to python so this can be implemented in python
        * added setExecuted and isExecuted accessors to underlying cpp handle as well
        * Tag AthenaPython-00-06-37

2014-11-10  Marcin Nowak  <Marcin.Nowak@cern.ch>
	* python\FilePeekerLib.py(process_metadata): enabled
	coral::Attribute::data<bool> reading for ROOT6 after fix: https://sft.its.cern.ch/jira/browse/ROOT-6067
        * Tag AthenaPython-00-06-36

...
(Long ChangeLog diff - truncated)