configure --with-largefiles --disable-tagged-hash generates error

[Joe St Sauver]

Building with:

./configure         --prefix=/news \
                    --bindir=/news/bin \
                    --mandir=/usr/local/man \
                    --with-perl \
                    --with-db-dir=/news \
                    --with-spool-dir=/var/spool/news \
                    --with-log-dir=/var/log/news \
                    --with-tmp-path=/news/tmp \
                    --with-sendmail=/usr/lib/sendmail \
                    --with-largefiles --disable-tagged-hash
                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Generates the interesting error:

configure: error: --enable-tagged-hash and --with-largefiles can not be 
used at the same time.

Note that --disable-tagged-hash is not flagged as a bad option (assuming
it is), and is not correctly noted as a negation of the option (which I'd
assert it should be). 

"--with-largefiles --enable-tagged-hash=no" likewise is flagged as an
error...

Apparently negating that --enable option requires using the rather odd
syntax of "--with-largefiles --disable-enable-tagged-hash" (ugh). 

Joe