Keyboard support, code movement, and TestManager

Major Changes
=============
- Added "testman.h" and "testman.cpp" to be used exclusively to test stuff (from a
GameManager perspective)
- Moved all the testing stuff to testman.cpp. 9game is just an empty class now to
manage other GameManagers
- Moved all the initializing stuff from 9Game to main. 9Game is like any other
GameManager now (just that it manages other GameManagers)
- Added keyboard.h and keyboard.c to handle keyboard interrupts (by replacing the
keyboard ISR)
- Keyboard is working :D can read more than one key at a time. (tested in
TestManager with WASD)

Minor Changes
=============
- Removed the exception throwing in SpriteLoader::unloadFile() (because it just
makes things unnecessarily complicated)
- added finished() to GameManager to indicate whether a GameManager is finished or
not
- Animation test + key control test. Sprite moves around depending on wasd key
input. (program ends when off screen to right)
- Set 0x00 as transparency color with drawSprite (TODO: change to make this
customizeable on runtime)
- Edited Makefile to reflect new changes

Notes
=====
- Animation seems to work nice and smooth in dosbox, slow in dosemu, so maybe I
should start testing in both dosemu and dosbox
- TODO: fix bug with drawSprite. When a sprite is drawn on the right of the screen
it "wraps around" to the other side by one pixel in width

 /* --------

    this class defines a GameManager

    a GameManager is a Renderable Interactive class that can add and remove and manage

    several game objects. For example, a menu can be a game manager, a game level can be a

    game manager

   */

 #ifndef GAMEMANAGER

 #define GAMEMANAGER

 #include "intractv.h"

 #include "renderbl.h"

 #include "gobject.h"

 class GameManager : public Interactive , public Renderable

 {

 protected:

 public:

 	virtual int registerGameObject(GameObject * aGameObject) = 0; // adds an object to the game

 	virtual int finished() = 0; // returns GameManager::NOT_FINISHED if not done, anything else otherwise

 	static const int NOT_FINISHED = 0;

 };

 #endif