Fix structured compare#5

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mwiebe wants to merge 3 commits intonumpy:masterfrom

mwiebe:fix_structured_compare

Commits on Oct 28, 2010

Implemented tests and a fix for record array comparison
mwiebe
committed
Added tests and code for handling of broadcasting during subarray comparison
mwiebe
committed
Changed subarray field indexing to always append the shape, added test.
mwiebe
committed