Char Factory 0.2.5: run in Ikemen GO

Characters now run in Ikemen GO as well as MUGEN: pick the engine in Options, or use Debug → Run in MUGEN / Run in Ikemen GO to test the same character in both.

Added

• Run in Ikemen GO: Debug → Run in MUGEN / Run in Ikemen GO, an Ikemen GO folder and an engine
  choice in Tools → Options (Automatic runs in the engine of the folder the character is in;
  outside one, ZSS characters go to Ikemen GO), and charfactory run --engine ikemen. Ikemen GO
  loads a character outside its chars/ by its full path, no copy needed; its console output
  (warnings about the character) and crash log show in the Engine output panel, and a Motif in
  save/config.ini that does not exist is reported before the match closes on it.

Fixed

• Command tester (test_command): the b button was read as back, and 6 6 / 4 4 did not
  count as a dash.
• Validator: ModifyExplod and AppendToClipboard take the parameters of Explod and
  DisplayToClipboard, as the MUGEN documentation says, instead of reporting each as unknown.