Workaround to allow Mac users to see text; apparently the current Mac drivers do not support a pure GL_ALPHA texture, so for the OS_MACOS platform we use GL_LUMENENCE textures instead.  This means that text is not shaped (all letters are on a black background instead of showing the picture behind them) but at least you can see the text!
Workaround to allow Mac users to see text; apparently the current Mac drivers
do not support a pure GL_ALPHA texture, so for the OS_MACOS platform we
use GL_LUMENENCE textures instead.  This means that text is not shaped (all
letters are on a black background instead of showing the picture behind
them) but at least you can see the text!


git-svn-id: 28d9401aa571d5108e51b194aae6f24ca5964c06@4076 8cc4aa7f-3514-0410-904f-f2cc9021211c

crystalspace/CS,crystalspace/CS,crystalspace/CS,crystalspace/CS,crystalspace/CS,crystalspace/CS,crystalspace/CS,crystalspace/CS