When the windows platform recieves the action for a backspace
it will check to see if the character being delete is a surrogate
pair. If it is and the app is TSF aware app it will need to backspace
twice to remove both parts of the surrogate pair. For legacy apps this
is not required.
Rename ProcessActionsTestParse to NonUpdatable parse. It does
more then just test. Add handling for the invalidate context action
to this parse, so that if we emit a keystroke we invalidate the context
For the TSF applications in most cases there is no test parse
with updatable=false. In these cases we need to call the
core process event function and process the actions in the
one call. A bool flag has been added to track if the core process
event has been called for the current keystroke
This commit adds call to the core keyboard processor
on wm_keymanim_close event. To get the latest actions.
It also changes the core to allow QIT BACK even when
the context is empty.
