plcapi-5.2-1

Setting tag plcapi-5.2-1
new slice tag 'interface' for configuring a virtual interface
new builtin 030-interface_tags
new node accessor and tag 'virt' for mixing lxc & vs nodes
also exposed in GetNodeFlavour based on fcdistro and PLC_FLAVOUR_VIRT_MAP
moved ModPypthon and plc.wsgi in the apache/ subdir
renamed PLCAPI.spec into plcapi.spec
removed old and unused tag 'type' on slices(!) - original intention seemed like virt
support for php-5.4