iconv_close
===========

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

Gnulib module: iconv

Portability problems fixed by Gnulib:

  * GNU libiconv is not found if installed in $PREFIX/lib.

Portability problems not fixed by Gnulib:

  * This function is missing on some platforms: Mac OS X 10.5, FreeBSD 6.0, OpenBSD 3.8, Minix 3.1.8, IRIX 5.3, Cygwin, mingw, MSVC 9, BeOS, when GNU libiconv is not installed.