copy from test-extra-5.1 to main tree

mysql-test/suite/funcs_2/include/check_charset_ucs2.inc

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+--disable_warnings
+DROP TABLE IF EXISTS test.t1;
+DROP DATABASE test;
+eval CREATE DATABASE test CHARACTER SET utf8;
+USE test;
+--enable_warnings
+SET NAMES utf8;
+eval CREATE TABLE test.t1 (a CHAR(4) CHARACTER SET utf8) ENGINE=$engine_type CHARACTER SET utf8;
+--replace_column 3 # 4 # 5 # 6 # 7 # 8 # 9 # 10 # 11 # 12 # 13 # 14 # 16 # 17 # 18 #
+SHOW TABLE STATUS LIKE 't1';
+
+--replace_result $MYSQL_TEST_DIR MYSQL_TEST_DIR
+eval LOAD DATA INFILE 
+'$MYSQL_TEST_DIR/suite/funcs_2/data/charset_utf8.txt' INTO TABLE test.t1;
+eval ALTER TABLE test.t1 CHANGE a a CHAR(4) CHARACTER SET $cset COLLATE $coll;
+DELETE FROM test.t1 WHERE CHAR_LENGTH(a) <> 1;
+
+SELECT HEX(ORD(a)) AS a_ord, CHAR_LENGTH(a) AS a_len FROM test.t1 ORDER BY a, ORD(a);
+
+--disable_warnings
+DROP TABLE IF EXISTS test.t1;
+--enable_warnings