[Bug libstdc++/97362] [8/9/10/11 Regression] `__deref` in <functional> in debug mode clashes with internal macro in Windows system header

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97362

--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
And add __deref to the list of BADNAMES in
doc/xml/manual/appendix_contributing.xml and the
testsuite/17_intro/headers/names.cc test.