Changed the layer constructor to use a more pythonic:
Changed the layer constructor to use a more pythonic:

Layer(name, type, file)

Please review and comment!



git-svn-id: 5adfda8227e14e59fd47d5bd9925a30df16fed74@169 d397654b-2ff0-0310-9e29-ba003691a0f9

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