This call is not required before close() and it will prevent closing of writer
if write fails for some reason.

we're not interesting in exceptions in closing in these tests

Store CLOBs and BLOBs in maps (StreamStore) to improve performance and avoid using a second connection. (WIP)

Also remove an unnecesssary copy of the closeSilently() method

TCP Server: a base directory with a prefix with a database name with prefix didn't work as expected (this only applies to non-disk and wrapped file systems).

When creating a BLOB with in InputStream or a CLOB with a Reader, and the InputStream or Reader threw an non-IOException, then the LOB storage was broken when storing LOBs in the database.

If baseDir is set, and a database name is given which points to a directory above (eg. "../dbname"), an exception is thrown.

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