Re: reduce autoconf warnings

[Jim Meyering]

Eric Blake <address@hidden> wrote:
> When running with 'autoconf -Wall', gnulib generates very noisy output.
> I'm not touching the AC_TRY_LINK vs AC_LINK_IFELSE issue (as I know that
> Bruno already has strong feelings about continuing to use the deprecated
> interface).  But this fixes other issues that are less controversial,
> using the fact that gnulib requires autoconf 2.59.  AC_FOREACH wasn't
> replaced by m4_foreach_w until 2.60, but gnulib-tool guarantees
> m4_foreach_w even for 2.59, so that change was safe.  And AS_HELP_STRING
> was already available in 2.59.

Fine by me.  Thanks!

We, of all people really should be more sensitive to autoconf warnings,
not just so that we know when/if we introduce new ones, but also to set
a proper example.