TODO list for Perl module Alien::SDL

- move prebuilt binaries to http://sdl.perl.org/
- give option to use old sources
- give app to update and manage source code see below
- use a json file which we can update off site (not hard coded) to link to new SHA sum and packs
- when checking for prereq. libs, use pkg-config if available
- build only libs like png or tiff in case they are not already installed on the system
- printing missing libs when calling Build