GPKG: make OGRGeoPackageDataSource used common code of SQLite drivers to benefit from various configuration options (OGR_SQLITE_SYNCHRONOUS, OGR_SQLITE_CACHE, OGR_SQLITE_JOURNAL, OGR_SQLITE_PRAGMA) and to be able to use the VSI Virtual File API

git-svn-id: https://svn.osgeo.org/gdal/trunk@27325 f0d54148-0727-0410-94bb-9a71ac55c965
Merge branch 'trunk' into trunk_with_coverage