8.21 langinfo.h

POSIX specification:
http://www.opengroup.org/onlinepubs/9699919799/basedefs/langinfo.h.html

Gnulib module: langinfo

Portability problems fixed by Gnulib:

• This header file is missing on some platforms: Minix 3.1.8, mingw, MSVC 9, BeOS.
• The constant CODESET is not defined on some platforms: glibc 2.0.6, OpenBSD 3.8.
• The constants ERA, ERA_D_FMT, ERA_D_T_FMT, ERA_T_FMT, ALT_DIGITS are not defined on some platforms: OpenBSD 3.8.
• The constants T_FMT_AMPM, YESEXPR, NOEXPR are not defined on some platforms: IRIX 5.3.

Portability problems not fixed by Gnulib: