Updates from libdynd cleanup branch
Add checks for null in attribute access exposure (fixes #85)
Add simple test for dynd getitem-ing itself
Merge pull request #120 from mwiebe/cleanup

Some cleanup after the libdynd PR
Merge pull request #117 from cpcloud/int-getitem

Add simple test for dynd getitem-ing itself
Add crashing test
More crashing tests
Add array_is_scalar for checking null before is_scalar
Use array_is_scalar in w_array
Remove superfluous tests