use while (runTime.loop() { .. } where possible in solvers

- change system/controlDict to use functions {..} instead of functions (..);
  * This is internally more efficient
- fixed formatting of system/controlDict functions entry

- pedantic change: use 'return 0' instead of 'return(0)' in the applications,
  since return is a C/C++ keyword, not a function.

applications/utilities/mesh/manipulation/moveEngineMesh/moveEngineMesh.C

@@ -47,9 +47,8 @@ int main(int argc, char *argv[])
 
     Info<< "\nStarting time loop\n" << endl;
 
-    while (runTime.run())
+    while (runTime.loop())
     {
-        runTime++;
         Info<< "Time = " << runTime.theta() << " CA-deg\n" << endl;
 
         mesh.move();
@@ -63,7 +62,7 @@ int main(int argc, char *argv[])
 
     Info<< "\n end\n";
 
-    return(0);
+    return 0;
 }