Embed icons and other defaut in source

[asmodehn]

The problem is that we dont want to have additional data for a library to move around with it.
In the end everything will depend on the application , therefore there is no point.
Still, for usefull default - relatively small - data (like name, icons, cursor, etc.), we should embed them in the source code.
We will use the RWOps structure for that...

[asmodehn]

Icon already embedded.
Still to embed :
a bmp for default engine (GL or not)
a png for default engine instead if built with sdl_image
a default font ( or a set of...), bmp or png
a default set of cursor (using surfaces t define them...), bmp or png

[asmodehn]

embedded the default image,
embedded one default latin-1 font
just need the set of cursor (bmp and png) and that will do it for now...