Make toolmenus work around well with sc-text..
update line join type of _draw().
update do_popup_menu
using image button instead of text buttons.
using image button..
update Makefiles
update source icons.
revise Makefiles.
modify background of menu.
remove test-floatborder..
add new icons.
implement shape chooser @ sc-shape.c .
Update canvas and operators.
Add new button types.
Actually did nothing.
Add menu of shapechooser.
add notify
Updating.
auto dispose menus' position..
clean comments