[Ohrrpgce] a gfx_sdl difference

[James Paige]

I just noticed an interesting gfx_sdl difference.

Go into the sprite editor. press Capslock to scroll the sprite with the 
arrow keys

Capslock will act as if it is being held down. Press capslock again (to 
turn it off) and then it will act as if you have released it.

I think this is more correct capslock behavior than what we had before, 
although it feels a little awkward.

Possible solutions:

* Choose a different key for sprite scrolling
* Show a visual indicator that scrolling mode is active

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James