Simplify the signature declarations in operatordecl
Avoid special-casing type inference of unituples on int tuples.
Add a test for recursively homogenous tuple iteration (it works!)
Merge pull request #573 from pitrou/non_int_tuples

Avoid special-casing type inference of unituples on int tuples
Merge pull request #568 from pitrou/simplify_operatordecl

Simplify the signature declarations in operatordecl
Merge branch 'master' of github.com:numba/numba into iternext