Support for unpacking of heterogenous tuples
Support complex numbers in heterogenous tuples.
Add a test for nested tuple unpacking
Add comments and simplify some code.
Factor out some code
Remove unreachable code
Merge branch 'master' of github.com:numba/numba into heterogenous_unpack
Merge pull request #577 from pitrou/heterogenous_unpack

Heterogenous tuple unpacking in native mode