[issue10889] Fix range slicing and indexing to handle lengths > sys.maxsize

[Nick Coghlan]

Nick Coghlan <ncoghlan at gmail.com> added the comment:

Committed as r87948.

I added a few large_range tests to those in the patch. I checked that IndexError is raised when appropriate, as well as a specific test for the combination of a large range with a large negative step.

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