11.31 sysexits.h

Defines the EX_* macros, including EX_OK.

Gnulib module: sysexits

Portability problems fixed by Gnulib:

• This header file is missing on some platforms: mingw, MSVC 9, Interix 3.5, BeOS.
• The macro EX_CONFIG is missing on some platforms: HP-UX 11.

Portability problems not fixed by Gnulib: