Issue #5057: fix a bug in the peepholer that led to non-portable pyc files between narrow and wide builds while optimizing BINARY_SUBSCR on non-BMP chars (e.g. "\U00012345"[0]).

Issue #11467: Fix urlparse behavior when handling urls which contains scheme specific part only digits.

#11845: Fix typo in rangeobject.c that caused a crash in compute_slice_indices.  Patch by Daniel Urban.

Before reading the code to check, I wasn't sure if it operated on
full domain names or just individual labels.

Before reading the code to check, I wasn't sure if it operated on
full domain names or just individual labels.

Forward ported changesets b4b1f557d563 and f4adc2926bf5 by Raymond
Hettinger in branch '2.7'.

Patch by Amaury Forgeot d'Arc, updated by Sando Tosi.

Patch by Amaury Forgeot d'Arc, updated by Sando Tosi.