Humongous ScummVM Binds

A configuration for Humongous' games running in ScummVM. Save, load, and arrow keys are bound, as are the more useful ScummVM emulation functions. Note that several later games disable the save & load keys in favor of the in-game interface. In those cases all letters on the keyboard trigger clickpoint animations in the current screen. Not to be used with Pajama Sam 4 or Pep's Birthday Surprise. I will do further testing on the Junior Arcade games to determine the best layout for each.