Re: gawk acinclude.m4 shouldn't use `sinclude' with Autoconf 2.5x

[Akim Demaille]

| This is an update to my May 20 message entitled "Re: gawk 3.1.1 has
| bad configure check for mmap() on Solaris" which submitted a patch to
| upgrade Gawk 3.1.1 to Autoconf 2.53 and Automake 1.6.1.
| 
| Akim Demaille just pointed out to me that the m4 directive "sinclude"
| has been deprecated in the Autoconf documentation ever since Autoconf
| 2.49a.  It looks like "sinclude" will finally be removed in Autoconf
| 2.54 because it is causing some problems in other areas.  Gawk is the
| only GNU program that we found that still uses "sinclude".  Here is a
| patch to upgrade Gawk to the new naming convention.

Paul, I think I should give you might impression about this: people
use sinclude because the original Autoconf turned ``include''
completely off.  So really, I think you ought to
s/sinclude/m4_include/.  I very much doubt there is any genuine user of
_S_include in the Autoconf realm.