fix for getitem
Use the standard stdlib.h header and not malloc.h
Merge pull request #38 from bnoon/master

Fix for getting an Array item
Remove old chunked execution example.
knownfailures handled "by hand" in test_blz_datashape.py
Merge remote-tracking branch 'origin/master'
Merge remote-tracking branch 'origin/persist' into persist
Merge branch 'master' into persist
support for scalars as terminals
removed unused code in chunked_dot.py. Cleaned up a bit.
adapted chunked_dot.py to run on disk arrays. Made it a nicer script.