Make demos Matlab compatible for comparison with dump_demos script. * brighten.m, colorcube.m: Replace 'tic' option to axis with setting properties on gca. * axis.m: Use 'origin', rather than 'zero', for xaxislocation, yaxislocation demos. * datetick.m: Fix typo '2' -> 'ax'. * legend.m: Use labels with call to legend() rather than embedding labels in call to plot. * text.m, xlim.m, ylim.m, zlim.m: Remove asserts from demo blocks. * isonormals.m: Use Matlab syntax in string definitions. * light.m: Use space between function name and opening parenthesis in demos. Add missing semicolon at end of lines. * dump_demos.m: Add helper functions sombrero() and rgbplot() to script so that demos will run cleanly in Matlab.

ec48ad192f8f2b60a58e032924a53529903d1bcb gnulib