MVStore: closing a map and making it read-only is now only a marker and not enforced, to allow concurrent store operations

Fix performance regression for: Fix bug with ALLOW_LITERALS=NONE, where the periodic analyze table on insert would throw an exception.

For in-memory databases, queries with a "group by" column that is also a hash index threw a RuntimeException.

    Make ValueGeometry#getDimensionCount more reliable.
    Add unit test to check for illegal ValueGeometry comparison
    Add unit test for conversion of Geometry object into Object
    Add optional export to MANIFEST.MF for JTS Geometry classes
    Validate that geometry values can be represented in WKB.