NITF: allow JP2KAK to be used as the JPEG2000 compression engine in the CreateCopy() case (patch by bugbuster, #5386)

git-svn-id: https://svn.osgeo.org/gdal/trunk@26980 f0d54148-0727-0410-94bb-9a71ac55c965
Merge branch 'trunk' into trunk_travis_macosx