Annotate lookups of stuff with term:name that are known at compile ti…

…me with the statically known type. Gets us some better static analysis, including with constants, as pointed out by moritz++.

src/Perl6/Actions.pm

@@ -4638,6 +4638,7 @@ class Perl6::Actions is HLL::Actions {
             $*W.get_ref($type);
         $past<has_compile_time_value> := 1;
         $past<compile_time_value> := $type;
+        $past.type($type.WHAT);
         return $past;
     }