nice
====

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

Gnulib module: ---

Portability problems fixed by Gnulib:

Portability problems not fixed by Gnulib:

  * This function is missing on some platforms: mingw, MSVC 9, BeOS.

  * In glibc before glibc 2.2.4, nice returned 0 upon success.