Updated iPhone keyboard code (which builds and runs on the iPad and iPhone simulator now)

Updated iPhone demos (which build and run again)

src/events/SDL_keyboard.c

@@ -551,6 +551,10 @@ SDL_UCS4ToUTF8(Uint32 ch, char *dst)
 int
 SDL_KeyboardInit(void)
 {
+    SDL_Keyboard *keyboard = &SDL_keyboard;
+
+    /* Set the default keymap */
+    SDL_memcpy(keyboard->keymap, SDL_default_keymap, sizeof(SDL_default_keymap));
     return (0);
 }