pkg/43666: mysql5-client (as well as mysql51-client) doesn't compile anymore

[the_badger%gmx.net@localhost]

>Number:         43666
>Category:       pkg
>Synopsis:       mysql5-client (as well as mysql51-client) doesn't compile 
>anymore
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    pkg-manager
>State:          open
>Class:          support
>Submitter-Id:   net
>Arrival-Date:   Sun Jul 25 15:35:03 +0000 2010
>Originator:     Volkmar Seifert
>Release:        NetBSD 5.1_RC2
>Organization:
>Environment:
NetBSD butterfly.home.nifelheim.info 5.1_RC2 NetBSD 5.1_RC2 (BUTTERFLY-1.0) #0: 
Sat Jun 12 00:11:33 CEST 2010  
build%panther.home.nifelheim.info@localhost:/build/work/i386/butterfly/obj/build/src/sys/arch/i386/compile/BUTTERFLY
 i386
>Description:
First of all, I use pkgsrc-current, with nightly updates from cvs.

I updated perl5, and in the process, it must have updated autoconf from its 
previous version (obviously 2.63 or something compatible, because before the 
update I did not have these problems) to version 2.66.
As the perl5-update-process was updating mysql5, the configure-script failed 
with the following message:

/bin/rm -f /var/pkgwrk/databases/mysql51-client/work/mysql-5.1.48/configure~
cd /var/pkgwrk/databases/mysql51-client/work/mysql-5.1.48 && autoconf && 
autoheader
aclocal.m4:16: warning: this file was generated for autoconf 2.63.
You have another version of autoconf.  It may work, but is not guaranteed to.
If you have problems, you may need to regenerate the build system entirely.
To do so, use the procedure documented by the package, typically `autoreconf'.
configure.in:1926: error: AC_CHECK_SIZEOF: requires literal arguments
../../lib/autoconf/types.m4:765: AC_CHECK_SIZEOF is expanded from...
configure.in:1926: the top level
autom4te: /usr/pkg/bin/gm4 failed with exit status: 1
*** Error code 1

Since this effectively breaks the mysql-server-installation / -update as well, 
because it requires an installed mysql-client, this is a rather serious problem.

(Since the email-address I am currently forced to use is not on the list, 
please remember to include me in replies, thanks)
>How-To-Repeat:
Update autoconf, then do a "make" in database/mysql5-client or mysql51-client.
>Fix: