[3.6] bpo-30622: Improve NPN support detection (GH-5859)#5861

Merged

tiran merged 1 commit intopython:3.6from

tiran:backport-6cdb795-3.6

Feb 25, 2018

Commits on Feb 24, 2018

[3.6] bpo-30622: Improve NPN support detection (GH-5859)
tiran
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