bpo-35214: MSan workarounds for socket, time, and test_faulthandler. (GH-11375) (GH-11378)

Add Clang Memory Sanitizer build instrumentation to work around
false positives from the socket and time modules as well as skipping
a couple test_faulthandler tests.
(cherry picked from commit b474e6774d60fa67d5373e361a0ed53c18b24f53)

Co-authored-by: Gregory P. Smith <greg@krypto.org>
4 files changed