add option to ogr driver to force usage of a single driver when attempting to open files - can shave very slightly off of load times if ogr is built with a lot of drivers
add option to ogr driver to force usage of a single driver when attempting to open files - can shave very slightly off of load times if ogr is built with a lot of drivers

cjmayo/mapnik,mapycz/mapnik,naturalatlas/mapnik,mapnik/mapnik,mapnik/python-mapnik,davenquinn/python-mapnik,yiqingj/work,lightmare/mapnik,tomhughes/mapnik,Mappy/mapnik,Uli1/mapnik,rouault/mapnik,manz/python-mapnik,pnorman/mapnik,rouault/mapnik,zerebubuth/mapnik,Airphrame/mapnik,yohanboniface/python-mapnik,whuaegeanse/mapnik,yiqingj/work,naturalatlas/mapnik,CartoDB/mapnik,lightmare/mapnik,davenquinn/python-mapnik,mapnik/python-mapnik,cjmayo/mapnik,pramsey/mapnik,mbrukman/mapnik,tomhughes/python-mapnik,yohanboniface/python-mapnik,Mappy/mapnik,zerebubuth/mapnik,qianwenming/mapnik,mapnik/mapnik,zerebubuth/mapnik,lightmare/mapnik,mbrukman/mapnik,garnertb/python-mapnik,whuaegeanse/mapnik,mapnik/python-mapnik,strk/mapnik,CartoDB/mapnik,tomhughes/python-mapnik,garnertb/python-mapnik,jwomeara/mapnik,qianwenming/mapnik,tomhughes/python-mapnik,Mappy/mapnik,whuaegeanse/mapnik,cjmayo/mapnik,cjmayo/mapnik,sebastic/python-mapnik,yohanboniface/python-mapnik,jwomeara/mapnik,kapouer/mapnik,Airphrame/mapnik,jwomeara/mapnik,kapouer/mapnik,mbrukman/mapnik,mapnik/mapnik,stefanklug/mapnik,tomhughes/mapnik,qianwenming/mapnik,yiqingj/work,pnorman/mapnik,strk/mapnik,mapycz/python-mapnik,CartoDB/mapnik,garnertb/python-mapnik,pnorman/mapnik,stefanklug/mapnik,naturalatlas/mapnik,Uli1/mapnik,pramsey/mapnik,kapouer/mapnik,mapnik/mapnik,lightmare/mapnik,kapouer/mapnik,manz/python-mapnik,yiqingj/work,Uli1/mapnik,Mappy/mapnik,stefanklug/mapnik,tomhughes/mapnik,mapycz/python-mapnik,manz/python-mapnik,rouault/mapnik,qianwenming/mapnik,whuaegeanse/mapnik,Airphrame/mapnik,mapycz/mapnik,mbrukman/mapnik,stefanklug/mapnik,pramsey/mapnik,naturalatlas/mapnik,tomhughes/mapnik,qianwenming/mapnik,rouault/mapnik,Uli1/mapnik,strk/mapnik,pramsey/mapnik,pnorman/mapnik,sebastic/python-mapnik,mapycz/mapnik,Airphrame/mapnik,sebastic/python-mapnik,strk/mapnik,jwomeara/mapnik,davenquinn/python-mapnik