pylint deduping of clang/grappa
doc deduping
flake8 for pipelines
flakify clangcommon
pylint -E fixed for pipelines.py and related
pylint -E fixed for clangcommon and related
fix one last pipelines.py pylint error about defining Pipelined self._parent in __init__

Make Pipedlined into a proper python mixin class by making it
obey cooperative multiple inheritance. Involves putting the mixin
before the Operator base classes in subclasses.

see
http://stackoverflow.com/questions/6098970/are-mixin-class-init-functions-not-automatically-called-in-python
update TODO in pylint test
fix a bug in parser detected by pylint -E
Merge branch 'master' into bmyerz/refactoring-clang

Conflicts:
	raco/language/clang.py
	raco/language/clangcommon.py
	raco/language/grappalang.py
Merge pull request #333 from uwescience/bmyerz/refactoring-clang

Code quality in clang