AC_TYPE_MBSTATE_T -- more info

[Stepan Kasal]

Hello,

A while ago, I wrote:
> HP-UX 11.11 with GCC doesn't define mbstate_t in wchar.h, even though
> functions mbrlen and mbrtowc are available.

I've got additional information from the original bug reporter,
Dirk Heinrichs <address@hidden>:

It seems to be enough to
        #include <sys/_mbstate_t.h>
before including wchar.h .

I'd appreciate if you could update AC_TYPE_MBSTATE_T and AC_FUNC_MBRTOWC
macros to reflect this fact.
I ask you to do it for me because
        1) I don't have access to the system
        2) I don't have any experience with writing autoconf macros
which is an unfortunate combination.

Thank you in advance,
        Stepan