* Undoing the previous applyMovement() changes for characters. This was causing bugs for the Motion Actuator.
* Creating a Character Motion type for the Motion Actuator with specific controls for characters. This includes moving, rotating and jumping.
* Adding a KX_CharacterWrapper.walkDirection to set the character's direction and speed.
Note, this also resolves the following bugs:
[#33585] "Setting dLoc of motion actuator [0,0,0] via python won't stop object" reported by Manuel Bellersen (urfoex)
[#33503] "Character physics type won´t accept more than one motion anymore" reported by Mr Larodos
* jump() -- causes the character to jump
* onGround -- specifies whether or not the character is on the ground
* gravity -- controls the "gravity" that the character physics uses for the character
More options could be added (such as jump speed, step height, make fall speed, max slope, etc).