Log Message:
Import ipa_sdb version 1.0.1.
Based on PR 34860 by Andrey Simonenko and I made some modification.

IPA_SDB -- IPA simple database module

Main features:

- Distribution consists of database ipa_db_sdb(8) and statistics
  ipa_st_mod(8) modules;
- Modules completely support dynamic and static rules, limits and
  thresholds;
- All database files are stored in own record based database formats;
- Formats of database files are machine architecture independent;
- Sizes of database records are relatively small (binary data formats);
- Access to statistics can be granted accordingly to the user group;
- There is the ipa_sdb_dump(8) utility for dumping database files to
  text format and back.