getsubopt
=========

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

Gnulib module: getsubopt

Portability problems fixed by Gnulib:

  * This function is declared in unistd.h instead of stdlib.h on some platforms: Cygwin 1.7.1.

  * This function is missing on some platforms: mingw, BeOS.

Portability problems not fixed by Gnulib: