- fixes to support ExternalMediaLibrary better.

- fixes to SCode dependency to not remove package constants that appear in external function declaration
  some external functions do not have any annotation but they do have external arguments in external "C":
  Example:
      replaceable function getCriticalPressure 
        output AbsolutePressure pc;
        external "C" pc = TwoPhaseMedium_getCriticalPressure_(mediumName, libraryName, substanceName);
      end getCriticalPressure;

git-svn-id: https://openmodelica.org/svn/OpenModelica/trunk@15895 f25d12d1-65f4-0310-ae8a-bbce733d8d8e

Compiler/FrontEnd/NFSCodeDependency.mo

@@ -1245,7 +1245,14 @@ algorithm
       SCode.Annotation ann;
       list<Absyn.Exp> args;
 
-    // An external declaration might have an annotation that we need to analyse.
+    // An external declaration might have arguments that we need to analyse.
+    case (SOME(SCode.EXTERNALDECL(args = args, annotation_ = NONE())), _, _)
+      equation
+        List.map2_0(args, analyseExp, inEnv, inInfo);
+      then
+        ();
+
+    // An external declaration might have arguments and an annotation that we need to analyse.
     case (SOME(SCode.EXTERNALDECL(args = args, annotation_ = SOME(ann))), _, _)
       equation
         List.map2_0(args, analyseExp, inEnv, inInfo);