Patch by Ingrid Cheung and Brendan McLoughlin.

- Issue #17782: Fix undefined behaviour on platforms where ``struct timespec``'s "tv_nsec" member is not a C long.

registry does not grow exponentially with generation of process.

Thanks to David D Lowe for reporting.

  variable if empty path argument is specified.  Patch by Serhiy Storchaka.

Patch by Jason Michalski.

variable name (str on UNIX), instead of using the encoded name (bytes on UNIX).

integers where appropriate.  Initial patch by Serhiy Storchaka.

PyErr_SetFromWindowsErrWithFilenameObject, and
PyErr_SetExcFromWindowsErrWithFilenameObject.

Note that PyErr_SetExcFromWindowsErrWithFilenameObjectAndSomeOtherParametersSoThatTheNameGetsSoLongThatNobodyIsEverGonnaUseThisStrangeFunctionForAnything is still undocumented.