tmpfile: Add support for Android. * m4/tmpfile.m4 (gl_FUNC_TMPFILE): Add a runtime test whether tmpfile() works. * lib/tmpfile.c (tmpfile): Add an alternative implementation for Android. * modules/tmpfile (Depends-on): Add 'stdbool'. * doc/posix-functions/tmpfile.texi: Mention the Android bug. * modules/argv-iter-tests (Depends-on): Add 'tmpfile'.

#ifndef USERSPEC_H
# define USERSPEC_H 1

# include <sys/types.h>

const char *
parse_user_spec (const char *spec_arg, uid_t *uid, gid_t *gid,
                 char **username_arg, char **groupname_arg);

#endif