(Patch by Dionysios Kalofonos)

Closes #14250: regex.flags has not only explicit flags but also implicit flags and those from the pattern

3.2 explain json.dumps for non-string keys in dicts. closes issue6566. Patch contributed Kirubakaran Athmanathan

Original patch by Steffen Daode Nurpmeso

Patch by Florian Mladitsch

Patch by Dylan Sarber.

using --with-system-expat working when the system expat does not have
salted hash support.

Transplant from main repo d6c197edd99b: Fixes Issue #14234: CVE-2012-0876: Randomize hashes of xml attributes

using --with-system-expat working when the system expat does not have
salted hash support.

- change references from configure.in to configure.ac

in the hash table internal to the pyexpat module's copy of the expat
library to avoid a denial of service due to hash collisions.
Patch by David Malcolm with some modifications by the expat project.

in the hash table internal to the pyexpat module's copy of the expat
library to avoid a denial of service due to hash collisions.
Patch by David Malcolm with some modifications by the expat project.