more back-sql files + rdbms_dependent samples

servers/slapd/back-sql/other.c

servers/slapd/back-sql/rdbms_depend/mssql/create.sql

servers/slapd/back-sql/rdbms_depend/mssql/create_testdb.sql

servers/slapd/back-sql/rdbms_depend/mssql/drop.sql

servers/slapd/back-sql/rdbms_depend/mssql/drop_testdb.sql

servers/slapd/back-sql/rdbms_depend/mssql/slapd.conf

servers/slapd/back-sql/rdbms_depend/mssql/test_data.sql

servers/slapd/back-sql/rdbms_depend/mssql/test_metadata.sql

servers/slapd/back-sql/rdbms_depend/mysql/create.sql

servers/slapd/back-sql/rdbms_depend/mysql/create_testdb.sql

servers/slapd/back-sql/rdbms_depend/mysql/drop.sql

servers/slapd/back-sql/rdbms_depend/mysql/drop_testdb.sql

servers/slapd/back-sql/rdbms_depend/mysql/slapd.conf

servers/slapd/back-sql/rdbms_depend/mysql/test_data.sql

servers/slapd/back-sql/rdbms_depend/mysql/test_metadata.sql

servers/slapd/back-sql/rdbms_depend/oracle/create.sql

servers/slapd/back-sql/rdbms_depend/oracle/create_testdb.sql

servers/slapd/back-sql/rdbms_depend/oracle/drop.sql

servers/slapd/back-sql/rdbms_depend/oracle/drop_testdb.sql

servers/slapd/back-sql/rdbms_depend/oracle/slapd.conf