dlLibraryTable: Simplified and rationalised the handling of dynamic library loading

Rather than being tied to the Time class the dlLibraryTable libs is now a global
variable in the Foam namespace which is accessable by any class needing to load
dynamic libraries, in particular argList, Time and codeStream.

src/functionObjects/utilities/codedFunctionObject/codedFunctionObject.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     | Website:  https://openfoam.org
-    \\  /    A nd           | Copyright (C) 2011-2019 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2020 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -78,7 +78,7 @@ void Foam::codedFunctionObject::prepare
     // Copy filtered H template
     dynCode.addCopyFile("functionObjectTemplate.H");
 
-    // Debugging: make BC verbose
+    // Debugging: make verbose
     // dynCode.setFilterVariable("verbose", "true");
     // Info<<"compile " << name_ << " sha1: "
     //     << context.sha1() << endl;
@@ -99,12 +99,6 @@ void Foam::codedFunctionObject::prepare
 }
 
 
-Foam::dlLibraryTable& Foam::codedFunctionObject::libs() const
-{
-    return const_cast<Time&>(time_).libs();
-}
-
-
 Foam::string Foam::codedFunctionObject::description() const
 {
     return "functionObject " + name();