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

 #

 # Makefile for DJGPP

 #

 # Compiler command

 CXX=gxx

 CC=gcc

 #

 # Flags 

 #       -g  -- Enable debugging

 #       -wall  -- Turn on all warnings

 #

 CFLAGS=

 #Redirection app for logging

 REDIR=redir -o build.txt -eo 

 all: game.exe

 clean:

 	del *.o

 	del *.exe

 game.exe : 9game.o graphics.o main.o gobject.o movblobj.o sprload.o testman.o keyboard.o

 	$(REDIR) $(CXX) $(CFLAGS) -o game.exe 9game.o graphics.o keyboard.o gobject.o movblobj.o sprload.o testman.o main.o 

 #C:\DJGPP\LIB\LIBSTD~1.A

 graphics.o: graphics.cpp

 	$(REDIR) $(CXX) $(CFLAGS) -c graphics.cpp

 9game.o : 9game.cpp

 	$(REDIR) $(CXX) $(CFLAGS) -c 9game.cpp

 main.o : main.cpp

 	$(REDIR) $(CXX) $(CFLAGS) -c main.cpp

 gobject.o : gobject.cpp

 	$(REDIR) $(CXX) $(CFLAGS) -c gobject.cpp

 movblobj.o : movblobj.cpp

 	$(REDIR) $(CXX) $(CFLAGS) -c movblobj.cpp

 bmpload.o : bmpload.cpp

 	$(REDIR) $(CXX) $(CFLAGS) -c bmpload.cpp

 sprload.o : sprload.cpp

 	$(REDIR) $(CXX) $(CFLAGS) -c sprload.cpp

 testman.o : testman.cpp

 	$(REDIR) $(CXX) $(CFLAGS) -c testman.cpp

 keyboard.o : keyboard.c

 	$(REDIR) $(CC) $(CFLAGS) -c keyboard.c