Use argList::addOption, argList::addBoolOption (almost) everywhere

- ensure that the standard options (eg, from timeSelector) also have
  some usage information

applications/utilities/postProcessing/miscellaneous/foamListTimes/foamListTimes.C

@@ -50,7 +50,7 @@ int main(int argc, char *argv[])
     timeSelector::addOptions();  // -constant enabled
     argList::noBanner();
     argList::noParallel();
-    argList::validOptions.insert("processor", "");
+    argList::addBoolOption("processor");
 
 #   include "setRootCase.H"