Ensure that copyright is unique for rc, librc and libeinfo. Also, fix branding a little.

src/Makefile

@@ -100,7 +100,9 @@ all: .depend $(TARGET)
 
 version.h:
 	sed -n -e 's/^VERSION =[[:space:]]*\([^[:space:]]*\).*/#define VERSION "\1\"/p' ../Makefile > version.h
-	test -n "${BRANDING}" && echo "#define BRANDING \"${BRANDING}\"" >> version.h
+	if test -n "${BRANDING}"; then \
+		echo "#define BRANDING \"${BRANDING}\"" >> version.h; \
+	fi
 
 $(LIBEINFOOBJS):
 	$(CC) $(CPPFLAGS) $(CPPFLAGS_LIBEINFO) $(CFLAGS) -fPIC -c $<