COMP: install qsqlite4 plugin in windows installer

Packaging/Windows/CMakeLists.txt

@@ -118,6 +118,10 @@ install(DIRECTORY ${GDAL_DATA}
 install(FILES ${QT_TRANSLATIONS_FILES}
         DESTINATION  share/qt4/translations
         COMPONENT Resources)
+        
+install(FILES ${QT_PLUGINS_DIR}/sqldrivers/qsqlite4.dll
+        DESTINATION lib/qt4/plugins/sqldrivers/
+        COMPONENT Runtime)
 
 install(FILES qt.conf
         DESTINATION  bin