when a SQL query sent to postgres fails, output the whole thing so users know what mapnik tried to send (as the PSQL error hint truncates the sql)
when a SQL query sent to postgres fails, output the whole thing so users know what mapnik tried to send (as the PSQL error hint truncates the sql)

git-svn-id: 5adfda8227e14e59fd47d5bd9925a30df16fed74@1331 d397654b-2ff0-0310-9e29-ba003691a0f9

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