new menu.build arg: menu_width

[SirHadrian]

Allows you to change the default awful.menu width, useful when menu entries are too long and get cut out.

Code example in rc.lua:

awful.util.mymainmenu = freedesktop.menu.build {
    before = {{"Awesome", myawesomemenu, beautiful.awesome_icon} -- other triads can be put here
    },
    after = {{"Open terminal", terminal} -- other triads can be put here
    },
    width = 250 -- default 200
}

[lcpz]

Please see beautiful.menu_width.