prepend DESTDIR to plugins path replace multiple directory separators
prepend DESTDIR to plugins path
replace multiple directory separators



git-svn-id: 5adfda8227e14e59fd47d5bd9925a30df16fed74@616 d397654b-2ff0-0310-9e29-ba003691a0f9

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