You can customize your actionbar menus and FAB menu from v2.5.
Long press the actionbar title to enter edit mode. You can find 4 parts, FAB, Show, Hide and Disable in dialog. Drag the right icon to move and reorder it.
You can set ONE FAB menu and some Show menus. If the space is not enough, the Show menus will show in More, just like the Hide menus. If you don't need some menus any more, move them to Disable.
If you enable Split Actionbar, FAB will show as the first menu in bottom actionbar.