system
======

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

Gnulib module: system-posix

Portability problems fixed by Gnulib:

  * The macros WIFSIGNALED, WIFEXITED, WIFSTOPPED, WTERMSIG, WEXITSTATUS, WNOHANG, WUNTRACED, WSTOPSIG are not defined in <stdlib.h> (only in <sys/wait.h>) on some platforms: MirBSD 10.

Portability problems not fixed by Gnulib:

  * On Windows platforms (excluding Cygwin), the command processor used by the system function is cmd.exe, not /bin/sh.  Accordingly, the rules for quoting shell arguments containing spaces, quote or other special characters are different.