(svn r12549) -Fix [FS#1900](r11547): respect type of selected signal when building more signals using the GUI
-Fix: do not check patch settings but check if the Signal GUI window is open instead

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