1.0.15.9: further ASSOC & MEMBER transform improvements

1.0.15.9: further ASSOC & MEMBER transform improvements

 * Neither should be MAYBE-INLINE, as the DEFTRANSFORM result is better.

 * Compile the out-of-line bodies with high SPEED, and declare a missing
   LIST type.

 * Add %ASSOC-EQ, %ASSOC-KEY-EQ, and the corresponding %MEMBER-
   versions, and transform to these when (1) no :TEST is given, but
   the item to compare against is safe for EQ (2) :TEST is given and
   either 'EQ or #'EQ.