Separate the module 'waitpid' from the module 'sys_wait'. * lib/sys_wait.in.h (waitpid): Declare only if the 'waitpid' module is present. * m4/sys_wait_h.m4 (gl_SYS_WAIT_MODULE_INDICATOR): Invoke gl_MODULE_INDICATOR_FOR_TESTS. (gl_SYS_WAIT_H_DEFAULTS): Initialize GNULIB_WAITPID. * modules/sys_wait (Depends-on): Remove waitpid. (Makefile.am): Substitute GNULIB_WAITPID. * modules/waitpid (configure.ac): Invoke gl_SYS_WAIT_MODULE_INDICATOR. * tests/test-sys_wait-c++.cc (GNULIB_NAMESPACE::waitpid): Check the signature only if the 'waitpid' module is present. * doc/posix-functions/waitpid.texi: Mention the 'waitpid' module. * NEWS: Mention the change. * modules/grantpt (Depends-on): Add waitpid. * modules/wait-process (Depends-on): Likewise.

This directory contains metainformation about the gnulib modules, one or two
files per module. These files are used by gnulib-tool.

For every module,
  - the file <module> is the metainformation about the library code of the
    module,
  - the file <module>-tests is the metainformation about the unit test of
    the module (optional but recommended).

All the files in this directory are distributed under the following copyright:

  Copyright (C) 2002-2010 Free Software Foundation, Inc.
  Copying and distribution of this file, with or without modification,
  in any medium, are permitted without royalty provided the copyright
  notice and this notice are preserved.