Crash when trying to load a recording or save with too long a filename

[tmewett]

This practically never occurs in normal operation, but it was discovered by @AntonyBoucher when implementing tmewett/BrogueCE#135.

The file is saved to disk with the full name, but the database filename entry is truncated due to a fixed maximum length in the implementation of notifyEvent in Brogue. More information available in Antony's comment.