(svn r13532) [NoAI] -Fix: in MultiPlayer SignID wasn't set correctly, causing weird effects. Code is now more unified, which should avoid simular effects in the future (tnx to glx for initial patch)

Makefile*
bin/*
!bin/data/chars.grf
!bin/data/openttdd.grf
!bin/data/openttdw.grf
!bin/data/opntitle.grf
!bin/scenario/README
!bin/scripts*
config.*
objs/*
src/rev.cpp