Merge 10.0 into 10.1

Also, apply the MDEV-17957 changes to encrypted page checksums,
and remove error message output from the checksum function,
because these messages would be useless noise when mariabackup
is retrying reads of corrupted-looking pages, and not that
useful during normal server operation either.

The error messages in fil_space_verify_crypt_checksum()
should be refactored separately.

mysql-test/suite/encryption/t/innodb-checksum-algorithm.test

@@ -67,17 +67,14 @@ EOF
 --list_files $MYSQLD_DATADIR/test
 UNLOCK TABLES;
 
-let $to = 6;
+let $to = 3;
 while ($to)
 {
 dec $to;
 let $tocksum = `select case $to
                when 0 then 'none'
-               when 1 then 'strict_none'
-               when 2 then 'innodb'
-               when 3 then 'strict_innodb'
-               when 4 then 'crc32'
-               when 5 then 'strict_crc32'
+               when 1 then 'innodb'
+               when 2 then 'crc32'
                end`;
 
 eval SET GLOBAL innodb_checksum_algorithm=$tocksum;