Geopackage Mosaic Reader
Merge pull request #355 from NielsCharlier/geopkg

Geopackage Mosaic Reader
[GEOT-4684] Build failure in geopkg GeoPackageReaderTest caused by bad File-URL conversions
[GEOT-4685] SLDStyleFactory graphic rasterization does not honor the rendering hints field
[GEOT-4686] WMSCoveageReader can return coveage bounds with no CRS
[GEOT-4687] Build failure in gt-svg DrawTest caused by visibly different image
[GEOT-4688] SimplifyingFilterVisitor should simplify and-ing/or-ing of negated filters
Fixing test, and also a bug in wfs store, attributes used in post filters were not being requested to the remote wfs
Check for references when removing a coverage on Imagemosaic (Related to GEOT-4640)