Add image directory back in

src/Makefile

 SRCDIRS		+= core
 SRCDIRS		+= proto
 SRCDIRS		+= net net/tcp net/udp
-#SRCDIRS		+= image
+SRCDIRS		+= image
 SRCDIRS		+= drivers/bus
 SRCDIRS		+= drivers/net
 SRCDIRS		+= drivers/block