COMP: rename dictionary::read<T> to dictionary::readEntry<T>

- avoids compiler ambiguity when virtual methods such as
  IOdictionary::read() exist.

- the method was introduced in 1806, and was thus not yet widely used

src/OpenFOAM/db/functionObjects/functionObject/functionObject.C

@@ -66,7 +66,7 @@ Foam::autoPtr<Foam::functionObject> Foam::functionObject::New
     const dictionary& dict
 )
 {
-    const word functionType(dict.lookup("type"));
+    const word functionType(dict.get<word>("type"));
 
     if (debug)
     {

src/OpenFOAM/db/functionObjects/functionObjectList/functionObjectList.C

@@ -309,11 +309,11 @@ bool Foam::functionObjectList::readFunctionObject
     }
     else if (funcDict.found("field"))
     {
-        requiredFields.insert(wordRe(funcDict.lookup("field")));
+        requiredFields.insert(funcDict.get<wordRe>("field"));
     }
     else if (funcDict.found("fields"))
     {
-        requiredFields.insert(wordReList(funcDict.lookup("fields")));
+        requiredFields.insert(funcDict.get<wordRes>("fields"));
     }
 
     // Insert named arguments

src/OpenFOAM/db/functionObjects/timeControl/timeControl.C

@@ -139,7 +139,7 @@ void Foam::timeControl::read(const dictionary& dict)
         case ocCpuTime:
         case ocAdjustableRunTime:
         {
-            const scalar userTime = readScalar(dict.lookup(intervalName));
+            const scalar userTime = dict.get<scalar>(intervalName);
             interval_ = time_.userTimeToTime(userTime);
             break;
         }