FIX: hdfstore queries of the form where=[('date', '>=', datetime(2013,1,1)), ('date', '<=', datetime(2014,1,1))] were broken
- modified Expr.parse_back_compat to check for tuples, in w, and unpack into w, op, value
- modified Expr.__init__ to modify the where list/tuple with the parsed result
added test by taking test_term_compat, and removing all Term calls
DOC: added release note about #6313
TST: checked for DeprecationWarning on tests for backwards compatability logic
Merge branch 'pytables_backwards_compatability' of https://github.com/hhuuggoo/pandas into hhuuggoo-pytables_backwards_compatability

Conflicts:
	doc/source/release.rst