```--------
After compiling from source, during make test I got the following error:

test main.loaddata failed with error
CURRENT_TEST: main.loaddata
mysqltest: At line 592: query 'LOAD DATA INFILE 'tmpp.txt' INTO TABLE t1
CHARACTER SET ucs2
(@b) SET a=REVERSE(@b)' failed: 1115: Unknown character set: 'ucs2'

I noticed other tests are skipped because of no ucs2
main.mix2_myisam_ucs2                    [ skipped ]  Test requires:'
have_ucs2'

Should main.loaddata be skipped if there is no ucs2

How To Repeat:
```

----------
Run make test on compiled source that doesn't have ucs2

Suggested fix:
-------------
the failing piece of the test should be moved from mysql-test/t/loaddata.test to
mysql-test/t/ctype_ucs.test.