MDEV-17841 S3 storage engine

A read-only storage engine that stores it's data in (aws) S3

To store data in S3 one could use ALTER TABLE:
ALTER TABLE table_name ENGINE=S3

libmarias3 integration done by Sergei Golubchik
libmarias3 created by Andrew Hutchings

mysql-test/suite/s3/basic.test

@@ -0,0 +1,55 @@
+--source include/have_s3.inc
+--source include/have_sequence.inc
+
+#
+# Create unique database for running the tests
+#
+--source create_database.inc
+--disable_warnings
+drop table if exists t1;
+--enable_warnings
+
+--echo #
+--echo # Test simple create of s3 table
+--echo #
+
+create or replace table t1 (a int, b int, key (a)) engine=aria;
+insert into t1 select seq,seq+10 from seq_1_to_10000;
+alter table t1 engine=s3;
+show create table t1;
+
+--replace_column 2 # 11 # 15 # 16 # 17 # 23 #
+--replace_result $database database
+--eval select * from information_schema.tables where table_schema="$database" and table_name="t1";
+--replace_column 8 # 12 # 13 # 14 # 19 #
+show table status like "t1";
+select * from t1 limit 10;
+select count(*) from t1;
+select * from t1 where a between 10 and 20;
+--replace_column 9 #
+explain select * from t1 where a between 10 and 20;
+--error ER_OPEN_AS_READONLY
+insert into t1 values (1,1);
+--error ER_OPEN_AS_READONLY
+update t1 set b=100 where a=1;
+--error ER_OPEN_AS_READONLY
+delete from t1 where a>10;
+alter table t1 engine=aria;
+show create table t1;
+select * from t1 limit 10;
+select count(*) from t1;
+delete from t1 where a=1;
+drop table t1;
+
+--echo #
+--echo # status
+--echo #
+
+--replace_column 2 X
+show variables like "s3%";
+--replace_column 2 X
+show status like "s3%";
+#
+# clean up
+#
+--source drop_database.inc