CodedFunction1: New Function1 which uses codeStream to dynamically compile the value function code

For example in the new tutorial case:
tutorials/incompressible/pimpleFoam/laminar/pitzDailyPulse
a cosine bell velocity pulse is specified at the inlet by directly defining the
code for it:

    inlet
    {
        type            uniformFixedValue;
        uniformValue    coded;

        name            pulse;

        codeInclude
        #{
            #include "mathematicalConstants.H"
        #};

        code
        #{
            return vector
            (
                0.5*(1 - cos(constant::mathematical::twoPi*min(x/0.3, 1))),
                0,
                0
            );
        #};
    }

which is then compiled automatically and linked into the running pimpleFoam
dynamically and executed to set the inlet velocity.

src/functionObjects/utilities/codedFunctionObject/codedFunctionObject.C

@@ -193,13 +193,9 @@ bool Foam::codedFunctionObject::read(const dictionary& dict)
     // The name keyword is "name". "redirectType" is also maintained here
     // for backwards compatibility, but "name" is taken in preference and
     // is printed in the error message if neither keyword is present.
-    name_ = word::null;
-    name_ = dict.lookupOrDefault("redirectType", name_);
-    name_ = dict.lookupOrDefault("name", name_);
-    if (name_ == word::null)
-    {
-        dict.lookup("name"); // <-- generate error message with "name" in it
-    }
+    name_ =  dict.found("redirectType")
+        ? dict.lookup<word>("redirectType")
+        : dict.lookup<word>("name");
 
     updateLibrary(name_);
     return redirectFunctionObject().read(dict);