Added --margin texel_width and --margin-ration ratio to control the spacing between glyphs in the font.
Added --margin texel_width and --margin-ration ratio to control the spacing between glyphs in the font.

scrawl/osg,scrawl/osg,scrawl/osg,openscenegraph/osg,openscenegraph/osg,scrawl/osg,openscenegraph/osg,openscenegraph/osg