features: NodeBase, StandardHost and Router nodes are not IPv4 specific nodes
export current FeatureBuildTest file
smoketest: fix for renamed inet --> INET
fixes compile errors (when disabled some features)
fingerprints: tested and fixed omnet4 fingerprints
nodes: Hack/bugfix: NodeBase delegate IPForward and forwardMulticast parameters for all existing routingtable variations

IPForward: ipv4:IPForward, ipv6:isRouter, Generic: forwardingEnabled
forwardMulticast: ipv4/ipv6:forwardMulticast, Generic: multicastForwardingEnabled
ipv6: neighbourdiscovery: bugfix for check an interface is directly connected to an AccessPoint.
omnet4 fingerprints changed
nodes: NodeBase6 extends NodeBase
nodes: Router6 and StandardHost6 based on NodeBase, NodeBase6 removed
RoutingTables: rename parameters - parameter names was differ in each routing table

renamed parameters:
IPForward --> forwarding
forwardingEnabled --> forwarding

forwardMulticast --> multicastForwarding
multicastForwardingEnabled --> multicastForwarding
omnet4 fingerprints changed - MultiRoutingTable didn't delegate forwarding flag for children routing tables
nodes: StandardHost6 based on StandardHost