Quad saw revision 1.1

Following the debugging of the revision 1 board, I've updated the quad saw PCB. It now has a coarse tune input (oscillator 1+2 and 3+4 are tuned together) with the posibility to add a jumper wire directly to -15V if one does not want a coarse tune input.

I have also changed the power input to a four pin version that includes panel ground (Oakley Sound Systems-style) and turned all connectors 180 degrees.

Oh, and most importantly, the outline-corners have been rounded off ;-)