Ticket #402 (closed defect: fixed)

Currently, series-specific metadata fields in the original metadata table are prefixed with the series name. This behavior makes it difficult to determine which metadata fields belong to which series number without attaching an IMetadata object to extract the Image Name strings and manually matching against the keys.

Solution:

1. Rather than prefixing series-specific metadata fields and saving into the global metadata table, instead save them to the already existing series-specific metadata tables in the CoreMetadata objects.

2. Continue saving non-series-specific metadata to the global metadata table. Rename getMetadata() to getGlobalMetadata().

3. Add getSeriesMetadata() method to return the series-specific tables from CoreMetadata according to the current series set with setSeries(int).

4. Reintroduce getMetadata() method as a deprecated method, with a new implementation: when called, union together all information from all metadata tables on the fly, adding the series prefixes as before, so the resultant table is as close as possible to the current implementation. The step will help avoid breakage of existing code. (If a series name exists, use that for the prefix. If null or blank, use "series n" where n is the series number.)