tests: fix non-php apache tests to still work without php
tests: fix non-php apache tests to still work without php

Setting "IF_HAVE_PHP" to "#" actually sets it to "", because the "#"
is treated as the start of a comment. We have to set it to "\#" if we
want to cause the "#" to actually get substituted into httpd.conf

https://bugzilla.gnome.org/show_bug.cgi?id=693311

jwendell/libsoup,Distrotech/libsoup,Distrotech/libsoup,jwendell/libsoup,Distrotech/libsoup,jwendell/libsoup,fanc999/libsoup,jwendell/libsoup,fanc999/libsoup,Distrotech/libsoup,fanc999/libsoup,Distrotech/libsoup,jwendell/libsoup,fanc999/libsoup,fanc999/libsoup