Update to 0.48
- New upstream release 0.48
- Added support for db_exists and lock_detect
- Fixed bug with c_pget when the DB_GET_BOTH flag is used
- Fixed bug with db_pget when the DB_GET_BOTH flag is used
- Changes to build with BDB 5.2
- Add support for new Heap database format
- Fixed test harness issue with Heap.t (CPAN RT#68818)
- Don't package build tools mkconsts.pl and scan.pl