MDEV-27154 allkeys.txt based tests for Unicode-4.0.0 and 5.2.0

mysql-test/include/ctype_unicode_allchars.inc

@@ -0,0 +1,23 @@
+#
+# Make a table with all Unicode characters
+# in the range U+0000 .. U+10FFFF
+#
+
+CREATE TABLE allchars AS SELECT 1 AS code, ' ' AS str LIMIT 0;
+SHOW CREATE TABLE allchars;
+
+CREATE TABLE t1tmp (a INT NOT NULL);
+DELIMITER $$;
+FOR i IN 0..0xFFF
+DO
+  INSERT INTO t1tmp VALUES (i);
+END FOR;
+$$
+DELIMITER ;$$
+INSERT INTO allchars SELECT
+  t1.a*0x1000+t2.a,
+  CHAR(t1.a*0x1000+t2.a USING utf32)
+FROM t1tmp t1, t1tmp t2
+WHERE t1.a BETWEEN 0 AND 0x10F;
+DROP TABLE t1tmp;
+SELECT COUNT(*) FROM allchars;