Bug#44232 Error msg should be improved when collation not supported.

checking in a test case that will reproduce
the error on v5r4.

mysql-test/suite/ibmdb2i/include/have_i54.inc

+# Check for IBM i 6.1 or later
+--disable_query_log
+system uname -rv > $MYSQLTEST_VARDIR/tmp/version;
+--disable_warnings
+drop table if exists uname_vr;
+--enable_warnings
+create temporary table uname_vr (r int, v int);
+--disable_warnings
+eval LOAD DATA INFILE "$MYSQLTEST_VARDIR/tmp/version" into table uname_vr fields terminated by ' ';
+--enable_warnings
+let $ok = `select count(*) from uname_vr where v = 5 and r = 4`;
+drop table uname_vr;
+remove_file $MYSQLTEST_VARDIR/tmp/version;
+--enable_query_log
+if (!$ok)
+{
+  skip "Need IBM i 5.4 or later";
+}
+  
+

mysql-test/suite/ibmdb2i/r/ibmdb2i_bug_44232.result

+create table t1 (c char(1) character set armscii8) engine=ibmdb2i;
+ERROR HY000: Can't create table 'test.t1' (errno: 2504)
+create table t1 (c char(1) character set eucjpms ) engine=ibmdb2i;
+ERROR HY000: Can't create table 'test.t1' (errno: 2504)

mysql-test/suite/ibmdb2i/t/ibmdb2i_bug_44232.test

+--source suite/ibmdb2i/include/have_ibmdb2i.inc
+--source suite/ibmdb2i/include/have_i54.inc
+
+--error 1005
+create table t1 (c char(1) character set armscii8) engine=ibmdb2i;
+
+--error 1005
+create table t1 (c char(1) character set eucjpms ) engine=ibmdb2i;