[WIP] bpo-31165: Call PyList_New() again if the source container was resized due to GC.#3915

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serhiy-storchaka wants to merge 1 commit intopython:mainfrom

serhiy-storchaka:list-allocate-again

Commits on Oct 7, 2017

bpo-31165: Call PyList_New() again if the source container was resized due to GC.
serhiy-storchaka
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