final argp patch

[Paul Eggert]

Roland McGrath <roland@redhat.com> writes:

> I'm not going to put any ELIDE_CODE kind of patches in until I hear it
> verified that gnulib is using the verbatim glibc sources for these files.

gnulib is using argp verbatim.  However, I'd rather we didn't install
ELIDE_CODE patches into glibc and gnulib, as the basic idea is a hack
left over from the days when people didn't use Autoconf.  We should be
able to modify gnulib to handle this problem automatically, without
needing ELIDE_CODE.

Simon, this sort of Autoconf automation is already being done for
alloca and for fnmatch.  Can you please look into doing it for argp
too?  For more details, please see:

gnulib/m4/alloca.m4
gnulib/m4/fnmatch.m4
gnulib/modules/alloca
gnulib/modules/fnmatch

In the meantime, the current situation is OK, as ELIDE_CODE is merely
an optimization.