added mousebutton_{up/down} and mouse_motion events, renamed "pressed" to "down" and "released" to "up" in event names

git-svn-id: svn://anubis/anaglym/trunk@112 99a6e188-d820-4881-8870-2d33a10e2619

tests/ballstairs.lua

@@ -7,7 +7,7 @@ function update_event()
     end
 end
 
-function key_pressed_event(key)
+function key_down_event(key)
     if (key == "d") then
         ball2:destroy()
     elseif (key == "p") then

tests/cratestack.lua

@@ -21,7 +21,7 @@ ground = ag.loadStaticModel("crate", 10)
 ground:setPosition(0, 0, -10)
 ag.setCamera(2, -12, 8, 0, 0, 2, 0, 0, 1)
 
-function key_pressed_event(key)
+function key_down_event(key)
     if (key == "d") then
         if (cratenum >= 1) then
             local idx = math.random(cratenum)