Added improve keyboard support~ for scroll.exe ^^
	modified:   16/Project 16.bfproject
	deleted:    16/modex16/PALVIEW.EXE
	new file:   16/modex16/dos_kb.c
	new file:   16/modex16/dos_kb.h
	new file:   16/modex16/lib/lib_com.cpp
	new file:   16/modex16/lib/lib_com.h
	modified:   16/modex16/makefile
	modified:   16/modex16/pcxtest.exe
	modified:   16/modex16/scroll.c
	modified:   16/modex16/scroll.exe
	modified:   16/modex16/test.exe
	modified:   16/modex16/test2.exe