chdir
=====

POSIX specification:
 https://pubs.opengroup.org/onlinepubs/9699919799/functions/chdir.html

Gnulib module: ---

Portability problems fixed by Gnulib:

  * This function is declared in different header files (namely, <io.h> or <direct.h>) on some platforms: mingw, MSVC 14.

Portability problems not fixed by Gnulib: