[interfacekit] input method extension

Hi there,

I've extended the input method mechanism a bit to allow for input 
methods that don't cause a bottom-line window in case the current 
target view isn't input method aware.
This works as following:
        1) you add a boolean "be:inline_only"=true to all 
B_INPUT_METHOD_EVENTs
        2) in the final B_INPUT_METHOD_CHANGED event (the one that confirms 
the
        "transaction"), you add a message in "be:translated". This message 
will only be
        used in case the current view does not understand input methods. 
IOW it will
        usually contain a B_KEY_DOWN message.

The input_server will then make sure that the target view gets what it 
deserves :-)

I've implemented a visual feedback for dead keys this way. If you see 
problems in this approach, or have a better idea, please notify me!
In any way, it shouldn't change previous behaviour for views that don't 
support input methods.

Bye,
   Axel.

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