Return old label_position_tolerance=0 behaviour.  - Place within 1/2 of spacing rather than 1/3.
Return old label_position_tolerance=0 behaviour.
 - Place within 1/2 of spacing rather than 1/3.



git-svn-id: 5adfda8227e14e59fd47d5bd9925a30df16fed74@639 d397654b-2ff0-0310-9e29-ba003691a0f9

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