lang/python3*: Backport upstream issue 24557

• Add backport of patch for EGD issue [1]
• Change USE_OPENSSL to USES= ssl
• Don't set CPE_VERSION to the default PORTVERSION

PR: 205960 [1], 199050 [1]
Reviewed by: koobs (python)
Approved by: python (koobs)
Obtained from: https://hg.python.org/cpython/rev/7c0432cf1f2e [1]
MFH: 2016Q3