During optimize_cond, we incorrectly removed the NOT LIKE condition when
attempting to remove any equality conditions.
Item_func_like's override of eq_cmp_result() returns COND_TRUE when
its collation is the binary collation. Item_bool_func2's implementation
of remove_eq_conds would then attempt to detect if both arguments were
equal to one another and return a NULL condition to optimize_conds. This
removes the condition from ever being evaluated (and
Item_func_like::val_bool is never called in this case), rendering the
incorrect result.
Fix this by checking the negated condition during eq_cmp_result() to
return either COND_FALSE in the negated==true case, or COND_TRUE in the
negated==false case which has the effect of not removing the NOT LIKE/LIKE
condition for the query.
This patch adds for "--ps-protocol" second execution
of queries "SELECT".
Also in this patch it is added ability to disable/enable
(--disable_ps2_protocol/--enable_ps2_protocol) second
execution for "--ps-prototocol" in testcases.
Tests with checking metadata or that cannot be run with
the view-protocol are excluded from --view-protocol.
For tests that do not allow the use of an additional connection,
the util connection is disabled with "--disable_service_connection".
Also cases with bugs for --view-protocol are disabled.
