code style: indent
IPv4NodeConfigurator: added 'configureRoutingTable' parameter
XMLUtils: added getAttributeBoolValue()
IPv4NetworkConfigurator: added xml parameters
RIPRouting: changed time parameters to modifiable
RIP: added examples

- infinity count demonstration
- mixed network: a subnet with RIP, and another preconfigured subnet
RIP: detects unaccepted notification category, eliminates some code analyzer warnings
ScenarioManager doc: NEED translate !!!!!
init stages
added InitStages.h
initstages: stage 0 --> STAGE_LOCAL_BEGIN; moved more local initializations to here
initStages: define some stages, added ASSERTs
more stages
more stages