New Symbols, X7602, X7601, U760, U7603, U7601

[Werner Almesberger]

Rene Harder wrote:
> U7603 (B7840) - Low loss RF filter for GPS receivers
> 
> I'm not quite sure what fits best to the type of the pins so i left them
> passive.  We might need to change them later on.

For other directional filters, we just used Input and Output, so I
changed it accordingly. I also make GND Power In.

Thanks,
- Werner