9.944 shutdown

POSIX specification:
http://www.opengroup.org/onlinepubs/9699919799/functions/shutdown.html

Gnulib module: shutdown

Portability problems fixed by Gnulib:

• On Windows platforms (excluding Cygwin), error codes for shutdown are not placed in errno, and WSAGetLastError must be used instead.

Portability problems not fixed by Gnulib: