message: Makefile.rules: add missing CODESIGN call
  When building an executable and a shared library at the same time (yes,
  Makefile.rules is setup to do this!) the executable was not codesigned.
diff: @@ -746,6 +746,9 @@ ifneq "$(DYLIB_NAME)" ""
  ifeq "$(DYLIB_ONLY)" ""
  $(EXE) : $(OBJECTS) $(ARCHIVE_NAME) $(DYLIB_FILENAME)
  $(LD) $(OBJECTS) $(ARCHIVE_NAME) -L. -l$(DYLIB_NAME) $(LDFLAGS) -o "$(EXE)"
  +ifneq "$(CODESIGN)" ""
  + $(CODESIGN) -s - "$(EXE)"
  +endif
  else
  EXE = $(DYLIB_FILENAME)
  endif
  