fix windows build

git-svn-id: http://svn.osgeo.org/qgis/trunk@15426 c8812cc2-4d05-0410-92ff-de0c093fc19c

Author: jef

ms-windows/osgeo4w/qgis.bat.tmpl

@@ -4,5 +4,6 @@ SET OSGEO4W_ROOT=@osgeo4w@
 call "%OSGEO4W_ROOT%"\bin\o4w_env.bat
 call "%OSGEO4W_ROOT%"\bin\grass-env.bat
 @echo off
+SET GDAL_DRIVER_PATH=%OSGEO4W_ROOT%\bin\gdalplugins\1.8
 path %PATH%;%GISBASE%\bin
 start "Quantum GIS" /B "%OSGEO4W_ROOT%"\apps\@package@\bin\qgis.exe %*