MTR tests fail with --view-protocol after wl106

[Philip Stoev]

The following tests

main.warnings main.limit main.order_by main.subselect_no_mat main.udf

fail with mwl106 . Before mwl106 , those tests either passed or failed with errors due to different ordering of result sets.

The failures are as follows:
* main.warnings, main.limit - select from view with LIMIT 0 seems to return 1 row

* main.order_by - query reports "out of memory"

* main.subselect_no_mat - crash in replace_where_subcondition(), a separate known semijoin bug

* main.udf - queries return different results when compared to no view-protocol

[Philip Stoev (pstoev-askmonty)]

To reproduce:

 perl mysql-test-run.pl --view-protocol --skip-combinations --skip-rpl --max-test-fail=1000 --nowarnings --force --suite=main --parallel=1

and then put the test in question

[Philip Stoev (pstoev-askmonty)]

Per Igor's request, this bug has been split into individual bugs.