When running tests in subprocesses with the regrtest -j option, a bug
in Cocoa Tk can result in a Tcl segfault.  Avoid the problem by forcing
Tk to fully initialize as an OS X gui process before destroying the
Tcl instance and creating another. (Original patch by Serhiy Storchaka)

locale-dependent regular expressions taking into account the locale.

Issue #22759: Query methods on pathlib.Path() (exists(), is_dir(), etc.) now return False when the underlying stat call raises NotADirectoryError.

This allows use with special filesystems such as VirtualBox shared folders.

PyFile_GetLine() failed. Patch written by Xavier de Gaye.