bsd.apache.mk Malformed conditional when APACHE_VERSION defined

[Dewayne Geraghty]

I filed a PR against textproc/htdig which should really be against the
ports systems.

Would someone be kind enough to advise the current method to specify the
apache version.   In ports.conf, I currently use
USE_APACHE=22 | APACHE_VERSION=22
to specify the required version of apache for:
textproc/htdig
www/mod_security
lang/php5

I believe this PR 

http://www.freebsd.org/cgi/query-pr.cgi?pr=186364

which probably should be routed to the ports system, and not textproc/htdig

The error is:
cd /usr/ports/textproc/htdig && make  -V UNIQUENAME
"/usr/ports/Mk/bsd.apache.mk", line 306: warning: String comparison
operator should be either == or !=
"/usr/ports/Mk/bsd.apache.mk", line 306: Malformed conditional
(!empty(_APACHE_VERSION_MINIMUM) && (${_APACHE_VERSION} <
${_APACHE_VERSION_MINIMUM}))
"/usr/ports/Mk/bsd.port.mk", line 6603: if-less endif
make: fatal errors encountered -- cannot continue

which goes away if APACHE_VERSION isn't used, eg.
cd /usr/ports/textproc/htdig && make __MAKE_CONF=/dev/null -V UNIQUENAME
htdig

Regards, Dewayne.