1.0.43.1: better handling of complex array types in fill-pointer ops

1.0.43.1: better handling of complex array types in fill-pointer ops

 Derive the fact that the result of MAKE-ARRAY is (NOT SIMPLE-ARRAY)
 when possible.

 Instead of DEFOPTIMIZERs asserting that various functions need a
 complex array, put the right type in the DEFKNOWNs instead.

 Also remove a few of redundant typechecks: FILL-POINTER ->
 ARRAY-HAS-FILL-POINTER call path does all the checks any of the other
 operations need.

 Fixes lp#309130.