Beginned switch to generic type capability
	modified:   demonstration.c
	modified:   mlist.c
	modified:   mlist.h
Continued work in generic list. Doesen't work yet.
	modified:   demonstration.c
	modified:   mlist.c
Generics done, adding a size needed parameter when adding each node.
	modified:   demonstration.c
	modified:   mlist.c
	modified:   mlist.h