on php-3.0.12, there is a Requires: webserver tag.
actually, php-3.0.12 installs an apache specific module,
so.. should better rely on apache
Requires: apache >= 1.3.9
apache 1.3.9 should be needed to help scripts uncomment the
needed php module support on apache as explained on 5259.
making it rely on spache 1.3.9 could also make easier to
support XML as explained on 5393
the only "webservers" we support are apache and our own secure web
server, which is based on apache, so this works for us. Consider it
an internal tag.