[Bug c/85487] Support '#pragma region' and '#pragma endregion' to allow code folding with Visual Studio

[redi at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85487

--- Comment #14 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Florian Weimer from comment #11)
> Clang does not appear to treat this pragma as a statement. Is this also the
> MSVC behavior?

Yes, I think so. I'll check that my patch is consistent.