newRPL - Updated to build 1510 [official build remains at 1487]

[spiff72]

Just FYI - I updated the first post in my overlay thread to add the option for the HP 40gs newRPL overlay. This one is still untested from a color-match standpoint, but functionally it should work fine.

It is based on the 39gs overlay, but with the colors changed to that of the 50g since the 40gs is a black (or at least dark gray) color scheme. It also includes all of the alpha characters on the background overlay since they don't have them on the keytops on this model.

Thanks!