(svn r14261) -Change [Makefile]: Move the revision detection code from Makefile.src.in to a
new bash script findversion.sh. This commit should have no functional changes.

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