add missing 'base' parameter to parse_shield_symbolizer and correct spelling of 'filter-factor' for parse_raster_symbolizer - closes #752
add missing 'base' parameter to parse_shield_symbolizer and correct spelling of 'filter-factor' for parse_raster_symbolizer - closes #752

git-svn-id: 5adfda8227e14e59fd47d5bd9925a30df16fed74@2788 d397654b-2ff0-0310-9e29-ba003691a0f9

makinacorpus/mapnik2,makinacorpus/mapnik2,makinacorpus/mapnik2,makinacorpus/mapnik2