Fix a race condition where pCampbot actions could continue even if a bot had disconnected.
minor: comment out "SetLastPosition" GridUserService debug message for now.
Record individual region bot disconnects in pCampbot log
Add IncomingPacketsResentCount clientstack statistics

This records how many packets were indicated to be resends by clients
Not 100% reliable since clients can lie about resends, but usually would indicate if clients are not receiving UDP acks at all or in a manner they consider timely.
Updated libomv to 25ee208a 2013-11-05
Added sending (for now hard-coded) sim isze in SendMapBlockSplit()
varregion: properly sense size of terrain heightmap and store as
compressed 2D database blob if a varregion.
Merge branch 'master' into varregion