Changes for version 0.06
- Include liblmdb 0.9.14
- Add LMDB::Env->open and LMDB_file->new for low level dbi handling
- Complete LMDB_File->drop support.
- Fix typo in ->set_maxreaders
- Use proper default flags for some methods. Thanks to Ken Fredric for its testing and reports
- LMDB_File - Tie to LMDB (OpenLDAP's Lightning Memory-Mapped Database)