Merge 10.6 into 10.10

The MDEV-29693 conflict resolution is from Monty, as well as is
a bug fix where ANALYZE TABLE wrongly built histograms for
single-column PRIMARY KEY.
Also includes a fix for safe_malloc error reporting.

Other things:
- Copied main.log_slow from 10.4 to avoid mtr issue

Disabled test:
- spider/bugfix.mdev_27239 because we started to get
  +Error	1429 Unable to connect to foreign data source: localhost
  -Error	1158 Got an error reading communication packets
- main.delayed
  - Bug#54332 Deadlock with two connections doing LOCK TABLE+INSERT DELAYED
    This part is disabled for now as it fails randomly with different
    warnings/errors (no corruption).

mysql-test/main/func_in.test

@@ -712,6 +712,40 @@ SELECT ('0x',1) IN ((0,1),(1,1));
 --echo # End of 10.4 tests
 --echo #
 
+--echo #
+--echo # Start of 10.5 tests
+--echo #
+
+--echo #
+--echo # MDEV-31303: Key not used
+--echo #
+CREATE TABLE `a` (
+  `id` bigint AUTO_INCREMENT PRIMARY KEY,
+  `c1` bigint unsigned,
+  KEY (`c1`)
+);
+
+INSERT INTO `a` VALUES (1,9223382399205928659),(2,9223384207280813348),
+(3,9223385953115437234),(4,9223387250780556749),(5,9223387354282558788),
+(6,9223387603870501596),(7,9223389270813433667),(8,9223389903231468827),
+(9,9223390280789586779),(10,9223391591398222899),(11,9223391875473564350),
+(12,9223393152250049433),(13,9223393939696790223),(14,9223394417225350415),
+(15,9223397646397141015),(16,9223398025879291243),(17,9223399038671098072),
+(18,9223399534968874556),(19,9223400449518009285),(20,9223400860292643549),
+(21,9223400940692256924),(22,9223401073791948119),(23,9223402820804649616),
+(24,9223403470951992681),(25,9223405581879567267),(26,9223405754978563829),
+(27,9223405972966828221), (28, 9223372036854775808), (29, 9223372036854775807) ;
+
+explain SELECT c1 FROM a WHERE c1 IN ( 1, 9223372036854775807 );
+explain SELECT c1 FROM a WHERE c1 IN ( 1, 9223372036854775808 );
+SELECT c1 FROM a WHERE c1 IN ( 1, 9223372036854775807 );
+SELECT c1 FROM a WHERE c1 IN ( 1, 9223372036854775808 );
+drop table `a`;
+
+--echo #
+--echo # End of 10.5 tests
+--echo #
+
 --echo #
 --echo # MDEV-29662 same values in `IN` set vs equal comparison produces
 --echo #            the different performance
@@ -845,4 +879,3 @@ drop table t1;
 --echo #
 --echo # End of 10.6 tests
 --echo #
-