Additional debug logging for unknown records in HSLF

Recently, while debugging app behavior on HSLF documents, I had to dig into the OOXML that Microsoft PowerPoint places into files saved in PPT format. Having information in the logs about when records were not parsed by POI was very helpful. The hex identifier was critical in being able to quickly search the [MS-PPT] spec for what type of record it was, and the integer identifier was helpful in quickly finding the Record type in

git-svn-id: 13f79535-47bb-0310-9956-ffa450edef68
1 file changed