and add the callback to each UI. Also, move verbose_msg() into
its own module.
- * automake.mk (src_ui_terminal_libui_a_SOURCES): Add msg-ui.c.
+ * automake.mk (src_ui_terminal_libui_a_SOURCES): Add msg-ui.c,
+ msg-ui.h.
* command-line.c: (parse_command_line) Call
verbose_increment_level() instead of increment err_verbosity