Issue #17046: Fix test_subprocess test_executable_without_cwd broken test case.
Close #18396: fix spurious test_signal failure on Windows

signal.getsignal returns None for some signals if faulthandler
is enabled (Patch by Jeremy Kloth)
- Fix a fcntl test case on KFreeBSD, Debian #708653 (Petr Salinger).
Issue #17998: Fix an internal error in regular expression engine.
Issue #16741: Fix an error reporting in int().
Issue #16067: Add description into MSI file to replace installer's temporary name.
Merge heads
Issue #18647: Temporary disable the "nothing to repeat" check to make buildbots happy.
Issue #16741: Remove testing of implementation artifact.