Skulls & Crossbones (rev 5) PAL dumps added

I dumped the three PALs from an original Atari Skulls & Crossbones (rev 5) PCB, an obscure arcade game, never heard of it until now.The three devices were all unlocked so I dumped them with a standard programmer and then converted two of them (a PAL16R8 and a PAL16L8) to GAL16V8 format using PALTOGAL utility.The third was already a GAL16V8 device so no conversion was needed. I can confirm that the two dumps mirrored here with the permission of Aaron Giles match the mine (same equations but different labels) so we can merge them.All dumps are tested working in GAL16V8  devices.