Update to 0.51
- New upstream release 0.51
- Documentation updated courtesy of Mike Caron
- Croak if attempt to freeze BerkeleyDB object (CPAN RT#69985)
- Rework FETCHSIZE (CPAN RT#75691)
- BR: perl(AutoLoader), perl(Carp), perl(Exporter) and perl(IO::File)
- Anticipate RHEL 7 having libdb
- Mention in %description that this module doesn't support db1
- Don't need to remove empty directories from buildroot
- Don't use macros for commands
- Don't need to BR: bundled perl(Test::More)