sage.misc.cython: Replace use of SPYX_TMP by a new cached function in sage.misc.temporary_file

[mkoeppe]

(split out from #33213)

CC: @orlitzky

Component: refactoring

Author: Michael Orlitzky

Branch/Commit: fc25b79

Reviewer: Matthias Koeppe

Issue created by migration from https://trac.sagemath.org/ticket/33793

[orlitzky]

Branch: u/mjo/ticket/33793

[orlitzky]

New commits:

202485f	Trac #33793: replace SAGE_TMP in SPYX_TMP.
827c527	Trac #33793: move spyx_tmp() to sage.misc.temporary_file.
fc25b79	Trac #33793: cache spyx_tmp() by hand.

[orlitzky]

Commit: fc25b79

[mkoeppe]

Reviewer: Matthias Koeppe

[mkoeppe]

comment:3

Looking great

[vbraun]

Changed branch from u/mjo/ticket/33793 to fc25b79