Support these new cards in slots 3, 4 or 5; based on code from Lukazi.
- extend Configuration's Input prop sheet page.
- add save/load snapshot for both cards.
- add command line switch for alt controller type (for SNES MAX card).
Change to using Registry's 'Configuration\Slot 3' for slot 3 cards (Uthernet, 4Play & SNES MAX).
Update help doc.
. cmd-line (-swap-buttons) or GUI "Swap 0/1" now swaps buttons 0/1 for all devices
. ie. Open/Solid Apple keys, real joystick, mouse or Num Pad keys
+ update the docs
