georaster - NLS problem with XML metadata

[ilucena]

It was reported on OTN discussion forum:

 http://forums.oracle.com/forums/thread.jspa?forumID=76&threadID=927514&messageID=3623132#3623132

That in some locales the XML metadata information is not written correctly making it impossible to update a GeoRaster on the server.

[ilucena]

I replace the binder to the XML metadata by a placing the full text on the PL/SQL script:

http://trac.osgeo.org/gdal/browser/trunk/gdal/frmts/georaster/georaster_wrapper.cpp#L2097

There is a better way to do that by associating a loblocator and then calling OCILobWrite just like a did for reading the metadata. I am might going to test that solution later if doesn't work for that OTN user that have raised the question.

Note: In that same revision there are some new implementations related to MaskBand? support. It is not functional yet.

I also cleaned up some unnecessary dependency on JPEG stuff on the oci_wrapper by moving it to the georaster private interface.

[ilucena]

Committed revision 17479