I wrote a Tokenizer to parse the coverage information for holdings
records.  I haven't written up the production rules for the grammar yet,
though, so its usage is commented out in LU_BuildInstance.  I worked on
testing it in test2.java, though.

I added the Coverage object, tied to ole_ds_coverage_t, to the
OLEHoldings class.  For the moment, the coverage information in its free
text form is just added as a holdings note.