Expose script parameters from descriptor explicitly...

and universally as ValueParameterDescriptors;
update implementation accordingly

core/descriptors/src/org/jetbrains/kotlin/descriptors/ScriptDescriptor.java

@@ -36,4 +36,13 @@ public interface ScriptDescriptor extends ClassDescriptor {
 
     @Nullable
     PropertyDescriptor getResultValue();
+
+    @NotNull
+    List<ValueParameterDescriptor> getExplicitConstructorParameters();
+
+    @NotNull
+    List<ValueParameterDescriptor> getImplicitReceiversParameters();
+
+    @NotNull
+    List<ValueParameterDescriptor> getScriptProvidedPropertiesParameters();
 }