Minor fixes and touchups.
Added a lot of TODO's.  Trying to clean up the code so it actually looks like we have a product.
Added the beginnings of encryptions.  Added image loading flags.
Added a new containers utility.  Improved file utilities.  Added UPSIDE_DOWN image flag.  Fixed matrix MakeOrtho (needs cleaning).  Improved networking / added TCP sockets.  Moved encryption utilities.  Other minor changes.