added interleaves to all agents
runs through make once before make installing or make testing
adds inventory variable support. closes #784
adds derived variable support
inventories set capacities correctly
known_primitives -> supported_types
pep8 comments
derivation -> init_derived
switched to explicit python2 until regexp issues are worked out
fixed cycpp for python 2.7.3
Merge pull request #796 from scopatz/memleakfix

fixed cycpp for python 2.7.3
Merge remote-tracking branch 'upstream/pp' into pp