* use basic, mysql & pgsql VARIANTs
* add a build dependency on librpc when building against uClibc (closes: #10132)
* ship empty, useless, but working config & ruleset
* ship dynamic engine & preprocessors, disabled by default
* make it listen on loopback by default
git-svn-id: svn://svn.openwrt.org/openwrt/packages@28667 3c298f89-4303-0410-b956-a3cf2f4a3e73
