Change GDAL 2.0 to GDAL 1.10

In the page gdal/ogr/ogrsf_frmts/gpkg/drv_geopackage.html, it mentioned GDAL 2.0 all over the place. However, GDAL 2.0 doesn't exist yet. In 2012, there is a discussion about whether to call the next release for GDAL 1.10 or GDAL 2.0. See this [link](http://comments.gmane.org/gmane.comp.gis.gdal.devel/33117). And finally, it is called GDAL 1.10 instead of 2.0. And the current version is GDAL 1.11. This file should be updated please.