(svn r11907) -Codechange: clean up of worldgen/heightmap ui: replace many separate DrawString() calls with widgets, use dropdown widgets, and use consistent positioning/sizing.

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