Add CD/DVD Image Control to Vbox Guest Additions

[kookyman]

Currently there is no way to change a CD/DVD image from within a full screen or seamless guest VM. In order to do so, you must revert to windowed mode, use the menu list, and then go back to full screen (or seamless) mode.

Suggest adding a component to the VBox Guest Additions to allow in-guest control of the currently mounted CD/DVD image.

This is an in-guest version of ticket #3233 about a Host Key shortcut. That version however involves shifting focus away from the guest.

[Frank Mehnert]

It should be already possible to use HostKey+Home to show the VM machine menu.

[Technologov]

This is now possible in VBox v3.x and the new mini-toolbar.

Fixed.

-Technologov