MDEV-6284: Clean up crufs (dirs files, duplicate entries etc)

debian/libmariadbclient-dev.dirs

-usr/include/
-usr/lib/

debian/libmariadbclient18.dirs

-usr/lib/

debian/mariadb-client-10.2.dirs

-usr/bin/
-usr/share/man/man1/
-usr/share/perl5/

debian/mariadb-common.dirs

+etc/mysql/mariadb.conf.d/

debian/mariadb-server-10.2.install

@@ -34,37 +34,20 @@ usr/bin/wsrep_sst_rsync
 usr/bin/wsrep_sst_xtrabackup
 usr/bin/wsrep_sst_xtrabackup-v2
 usr/lib/mysql/plugin/auth_pam.so
-usr/lib/mysql/plugin/auth_pam.so
-usr/lib/mysql/plugin/auth_socket.so
 usr/lib/mysql/plugin/auth_socket.so
 usr/lib/mysql/plugin/file_key_management.so
-usr/lib/mysql/plugin/file_key_management.so
-usr/lib/mysql/plugin/ha_archive.so
 usr/lib/mysql/plugin/ha_archive.so
 usr/lib/mysql/plugin/ha_blackhole.so
-usr/lib/mysql/plugin/ha_blackhole.so
-usr/lib/mysql/plugin/ha_federated.so
 usr/lib/mysql/plugin/ha_federated.so
 usr/lib/mysql/plugin/ha_federatedx.so
-usr/lib/mysql/plugin/ha_federatedx.so
-usr/lib/mysql/plugin/ha_mroonga.so
-usr/lib/mysql/plugin/ha_mroonga.so
-usr/lib/mysql/plugin/ha_sphinx.so
 usr/lib/mysql/plugin/ha_sphinx.so
 usr/lib/mysql/plugin/handlersocket.so
-usr/lib/mysql/plugin/handlersocket.so
-usr/lib/mysql/plugin/locales.so
 usr/lib/mysql/plugin/locales.so
 usr/lib/mysql/plugin/metadata_lock_info.so
-usr/lib/mysql/plugin/metadata_lock_info.so
-usr/lib/mysql/plugin/query_cache_info.so
 usr/lib/mysql/plugin/query_cache_info.so
 usr/lib/mysql/plugin/query_response_time.so
-usr/lib/mysql/plugin/query_response_time.so
-usr/lib/mysql/plugin/semisync_master.so
 usr/lib/mysql/plugin/semisync_master.so
 usr/lib/mysql/plugin/semisync_slave.so
-usr/lib/mysql/plugin/semisync_slave.so
 usr/lib/mysql/plugin/server_audit.so
 usr/lib/mysql/plugin/simple_password_check.so
 usr/lib/mysql/plugin/sql_errlog.so
@@ -72,30 +55,9 @@ usr/lib/mysql/plugin/user_variables.so
 usr/lib/mysql/plugin/wsrep_info.so
 usr/share/apport/package-hooks/source_mariadb-10.2.py
 usr/share/doc/mariadb-server-10.2/mysqld.sym.gz
-usr/share/man/man1/msql2mysql.1
-usr/share/man/man1/my_print_defaults.1
-usr/share/man/man1/myisam_ftdump.1
-usr/share/man/man1/myisamchk.1
-usr/share/man/man1/myisamlog.1
-usr/share/man/man1/myisampack.1
-usr/share/man/man1/mysql_convert_table_format.1
-usr/share/man/man1/mysql_install_db.1
-usr/share/man/man1/mysql_secure_installation.1
-usr/share/man/man1/mysql_setpermission.1
-usr/share/man/man1/mysql_tzinfo_to_sql.1
-usr/share/man/man1/mysqlbinlog.1
-usr/share/man/man1/mysqld_multi.1
-usr/share/man/man1/mysqld_safe.1
-usr/share/man/man1/mysqlhotcopy.1
-usr/share/man/man1/perror.1
-usr/share/man/man1/replace.1
-usr/share/man/man1/resolve_stack_dump.1
-usr/share/man/man1/resolveip.1
 usr/share/mysql/errmsg-utf8.txt
 usr/share/mysql/fill_help_tables.sql
 usr/share/mysql/maria_add_gis_sp_bootstrap.sql
-usr/share/mysql/mroonga/install.sql
-usr/share/mysql/mroonga/uninstall.sql
 usr/share/mysql/mysql_performance_tables.sql
 usr/share/mysql/mysql_system_tables.sql
 usr/share/mysql/mysql_system_tables_data.sql