Add database interface.
Add Tokyo Cabinet implementation for DbInterface.
Split off key normalization.
Add typedefs for dealing with DBs.
Malloc TC DbInterface; don't return a local.
Transition drop to the new DB interface.
Update Makefile to build the new setup.
Add GDBM interface.
Search for DB by name prefix.
Update Makefile handling of GDBM library.
Load DB support based on file extension.
Free DB interface at end of execution.
Remove unnecessary derefs and address-ofs.
Find DB libs using invocation info.
Add debug flag to compile.
Add open and close functions for GDBM.
Add TODO file.