All Numba CPU tests pass with this commit
Resolve ownership problems
Merge branch 'master' into devel

Conflicts:
	llvmlite/binding/executionengine.py
	llvmlite/binding/ffi.py
	llvmlite/binding/value.py
More ownerhship fix
Differentiate closed vs detached
Merge pull request #4 from sklam/devel

Working with Numba