strncasecmp
===========

POSIX specification:
 https://pubs.opengroup.org/onlinepubs/9699919799/functions/strncasecmp.html

Gnulib module: strcase

Portability problems fixed by Gnulib:

  * This function is missing on some platforms: MSVC 14.

Portability problems not fixed by Gnulib:

  * This function cannot work correctly on character strings in multibyte locales. Gnulib provides alternative functions mbsncasecmp and mbspcasecmp that do a case insensitive comparison of character strings and that work in all locales.