Makefile: use -modded instead of -with-local-modifications

Since we include the tail of the version in the default aliasname with
DEVELOPER, we want to see more of it.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

Makefile

@@ -294,7 +294,7 @@ ccan/config.h: ccan/tools/configurator/configurator Makefile
 	if $< --configurator-cc="$(CONFIGURATOR_CC)" $(CC) $(CFLAGS) > $@.new; then mv $@.new $@; else rm $@.new; exit 1; fi
 
 gen_version.h: FORCE
-	@(echo "#define VERSION \"`git describe --always --dirty=-with-local-modifications`\"" && echo "#define BUILD_FEATURES \"$(FEATURES)\"") > $@.new
+	@(echo "#define VERSION \"`git describe --always --dirty=-modded`\"" && echo "#define BUILD_FEATURES \"$(FEATURES)\"") > $@.new
 	@if cmp $@.new $@ >/dev/null 2>&2; then rm -f $@.new; else mv $@.new $@; echo Version updated; fi
 
 # All binaries require the external libs, ccan