key_event

Team,

I didn't hear any complaints, so I went ahead and revamped the key_event
mechanism.  Key_events now have both a keycode and a modcode (OR'd list
of modifiers, see keycode.h).  One problem still: I am not sure if we
should have key_3 and key_pound defined (as well as the other such
pairs).  SDL defines them both, but never sends the shifted version, ie
you get SDLK_6 whether shift is down or not, even though they have
SDLK_CARET defined.  So should this translation be left up to the
widget, the user's app, or what?  I would like to add wchar_t field to
the key_event as well so the printable character can be obtained simply
through key_event::character();

--Darren