[AD] Proposed documentation about GFX_TEXT

[Grzegorz Adam Hankiewicz <gradha@xxxxxxxxxx>]

Hi.

After being an asshole the other day to wlabbett@xxxxxxxxxx I noted
that GFX_TEXT is not that correctly explained. Here's a patch which
attempts to clear that. Besides, GFX_TEXT isn't too correct anyway, so
I'm going to replace it with AL_GFX_NONE in the allegro_new directory
(whenever my sluggish connection stops failing...).

Or maybe a new function like al_close_gfx_mode, which is more explicit,
could be created to help cleaning the internals of set_gfx_mode in the
far distant future? It's certainly weird to set a driver which closes
things, kind of clicking on windows' start button to shut down...

-- 
 Grzegorz Adam Hankiewicz   gradha@xxxxxxxxxx   http://gradha.infierno.org/

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