Add support for timing using delta clocks (#97)

* Small correction to getConstantName. I swear this didn't work before, but now it does.
* Support delta timing in mkxp-z
* refresh Graphics.delta time at the start of update
* Speed up load_data
* Replace Input.count calls with Input.time?

Data/Scripts/001_Technical/007_Errors.rb

@@ -50,14 +50,14 @@ def pbPrintException(e)
 
   print("#{message}\r\nThis exception was logged in #{errorlogline}.\r\nHold Ctrl after closing this message to copy it to the clipboard.")
   # Give a ~500ms coyote time to start holding Control
-  (Graphics.frame_rate / 2).ceil.times{
-    Graphics.update
+  t = System.delta
+  until (System.delta - t) >= 500000
     Input.update
     if Input.press?(Input::CTRL)
       Input.clipboard = message
       break
     end
-  }
+  end
 end
 
 def pbCriticalCode