DBUpdater accepts invalid directory names

[DavidSmith]

The DBUpdater program will add directories of CPSR2 data found in the directory trees given even if they are called something like "old", rather than the correct format "2004-11-29-22:15:41", the directories should have to pass a regular expression test.

DBUpdater already makes use of boost regular expression functions boost::regex_match, use this as a guide.