drop dependency on autoconf213

[robert_openbsd.org]

Summary

The following patch removes autoconf213 as a dependency from firefox
and thunderbird beacause these m4 files are dumb.

[cmt]

Right, that's somewhat historic.
Any reason for this spring-cleaning right now?

[robert_openbsd.org]

The horrors of run-autotools-fixup in bsd.port.mk led me here, no other reason, just seems like a sane thing to do.

[cmt]

Turns out this is not enough: the build fails with

Refreshing /wrkdirs/usr/ports/www/firefox/work/firefox-99.0/old-configure with /wrkdirs/usr/ports/www/firefox/work/firefox-99.0/build/autoconf/autoconf.sh
Autoconf requires GNU m4 1.1 or later
ERROR: autoconf exited with return code 1
===>  Script "configure" failed unexpectedly.

That's from ./build/moz.configure/old.configure

[robert_openbsd.org]

In D34445#788389, @cmt wrote:

Turns out this is not enough: the build fails with

Refreshing /wrkdirs/usr/ports/www/firefox/work/firefox-99.0/old-configure with /wrkdirs/usr/ports/www/firefox/work/firefox-99.0/build/autoconf/autoconf.sh
Autoconf requires GNU m4 1.1 or later
ERROR: autoconf exited with return code 1
===>  Script "configure" failed unexpectedly.

That's from ./build/moz.configure/old.configure

I haven't been able to reproduce that issues yet. Wonder why it is trying to refresh it.

[cmt]

patch-bug847568 touches old-configure.in - I'd rather ask why it does not regenerate your old-configure (are you even building what I'm building?). If in doubt, avoid any manual manipulation of the source and use poudriere, everything else gives unpredictable results.

[robert_openbsd.org]

In D34445#788774, @cmt wrote:

patch-bug847568 touches old-configure.in - I'd rather ask why it does not regenerate your old-configure (are you even building what I'm building?). If in doubt, avoid any manual manipulation of the source and use poudriere, everything else gives unpredictable results.

Okay so the issue is that build/autoconf/autoconf.sh requires m4, and now that dependency is not being pulled in because there is no dependency on autoconf.