Fix for --enable-legacy.  Fixes #1488
Merge pull request #1488 from mdboom/setup/fix-legacy

Error with install --enable-legacy
Added regression test for testing that using comparison operators is not allowed on tables
Disallow inequality comparisons for Table
Don't override exception in Python 3 (since one already gets raised). Also disable equality comparison.
Support equality and added equality tests
Define Table.__eq__ and Table.__ne__
Whitespace