replace base/black with base/glow in default map textures


git-svn-id: svn://svn.tuxfamily.org/svnroot/tesseract/main@1764 b412e182-2ed4-4078-95c4-27dc59f57fa9
add missing glow.tex


git-svn-id: svn://svn.tuxfamily.org/svnroot/tesseract/main@1765 b412e182-2ed4-4078-95c4-27dc59f57fa9