Merge pull request #728 from minorua/osgeo4w_gdalfilename

OSGeo4W: make sure that GDAL_FILENAME_IS_UTF8 is YES (fix #8010)

Author: NathanW2

ms-windows/osgeo4w/qgis.bat.tmpl

@@ -4,6 +4,7 @@ call "%OSGEO4W_ROOT%"\apps\grass\grass-@grassversion@\etc\env.bat
 @echo off
 path %PATH%;%OSGEO4W_ROOT%\apps\@package@\bin;%OSGEO4W_ROOT%\apps\grass\grass-@grassversion@\lib
 set QGIS_PREFIX_PATH=%OSGEO4W_ROOT:\=/%/apps/@package@
+set GDAL_FILENAME_IS_UTF8=YES
 rem Set VSI cache to be used as buffer, see #6448
 set VSI_CACHE=TRUE
 set VSI_CACHE_SIZE=1000000