OpenFileGDB: support opening files with ConfigurationKeyword=MAX_FILE_SIZE_4GB or MAX_FILE_SIZE_256TB (#5615)

git-svn-id: https://svn.osgeo.org/gdal/trunk@27639 f0d54148-0727-0410-94bb-9a71ac55c965
Merge branch 'trunk' into trunk_travis_macosx