Eliminates hidden application of new inside the COND macro.  This is needed
when APPLY is used to generate the condition.

On macaroni:

------ Config refcnt-opt ------
reverse              0:01.17
tak                  0:00.68
rfib                 0:00.15
exp3_8               0:00.20
tree_insert          0:00.43
tree_insert_32       0:00.42
------ Config gc-opt ------
reverse              0:00.67
tak                  0:00.62
rfib                 0:00.12
exp3_8               0:00.10
tree_insert          0:00.53
tree_insert_32       0:00.55