[issue1551] Port Python/import.c to py3k branch

[Nick Coghlan]

Nick Coghlan added the comment:

I should have known that fiddling with import.c couldn't possibly go as
smoothly as it had been ;)

The problem actually turned out to be fairly shallow - the merge picked
up a lot of calls to the PyString_* interfaces from the 2.x import
implementation. Replacing all those calls with the PyUnicode_*
equivalent eliminated the crash.

Fixed in rev 59319.

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resolution:  -> fixed
status: open -> closed
type:  -> crash

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