allow some decal shaders to reuse underlying normals


git-svn-id: svn://svn.tuxfamily.org/svnroot/tesseract/main@1925 b412e182-2ed4-4078-95c4-27dc59f57fa9
blend texture name command


git-svn-id: svn://svn.tuxfamily.org/svnroot/tesseract/main@1926 b412e182-2ed4-4078-95c4-27dc59f57fa9
texblend fix


git-svn-id: svn://svn.tuxfamily.org/svnroot/tesseract/main@1927 b412e182-2ed4-4078-95c4-27dc59f57fa9
stringslice copy cleanups


git-svn-id: svn://svn.tuxfamily.org/svnroot/tesseract/main@1928 b412e182-2ed4-4078-95c4-27dc59f57fa9
copystring cleanups


git-svn-id: svn://svn.tuxfamily.org/svnroot/tesseract/main@1929 b412e182-2ed4-4078-95c4-27dc59f57fa9
concatstring fix


git-svn-id: svn://svn.tuxfamily.org/svnroot/tesseract/main@1930 b412e182-2ed4-4078-95c4-27dc59f57fa9
remove intel_texgatheroffsetcomp_bug


git-svn-id: svn://svn.tuxfamily.org/svnroot/tesseract/main@1931 b412e182-2ed4-4078-95c4-27dc59f57fa9