Adding a simple HTML page to Repository for SDL 1.2 / 2.0

Hello !

Switched to @rpath for the install path and switched minimum OS to 10.5

It would be great to add a simple HTML page with a table to SDL 1.2/2.0,
with the information about what minimum OS is needed to run it and what is minimum needed
to compile it, to Mercurial for both.

Something like :

      SDL 1.2     SDL 2.0    SDL_image 1.2   SDL_image 2.0      SDL_mixer 1.2     SDL_mixer  ...