osgeo4w64: run Nightly instead of Experimental

Author: jef-n

ms-windows/osgeo4w/package-nightly64.cmd

@@ -148,7 +148,7 @@ echo ALL_BUILD: %DATE% %TIME%>>%LOG% 2>&1
 if errorlevel 1 goto error
 
 echo RUN_TESTS: %DATE% %TIME%>>%LOG% 2>&1
-%DEVENV% qgis%VERSION%.sln /Project Experimental /Build %BUILDCONF% /Out %LOG%>>%LOG% 2>&1
+%DEVENV% qgis%VERSION%.sln /Project Nightly /Build %BUILDCONF% /Out %LOG%>>%LOG% 2>&1
 REM if errorlevel 1 echo "TESTS WERE NOT SUCCESSFUL."
 
 echo INSTALL: %DATE% %TIME%>>%LOG% 2>&1