Blender Git Loki

BGE: The Step Height for a character physics controller is now set to 0.01, which means that Step Height can no longer be 0, which causes issues such as those noted in issue #33221, "KX_CharacterWrapper inconsistencies and error," reported by Angus Hollands (agoose77). I've also added a do_versions() fix that will give objects with 0 Step Height sane defaults. This means old files will now work better with character physics.