added svn color names from http://www.w3.org/TR/SVG/types.html#ColorKeywords
merged with tools branch to get color parser bugfix
fixed fill color problems, which have been of more general nature
added fill color sanity checks
cont'd refactoring svg2hgl
merged with trunk
duplicate external removed
rewrote decompiler to directly use nr_traverser for easier stack access
started refactoring svg2hgl
