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.

src/OpenFOAM/primitives/random/random.c

@@ -248,7 +248,7 @@ initstate(seed, arg_state, n)
 	if (n < BREAK_0) {
 		(void)fprintf(stderr,
 		    "random: not enough state (%d bytes); ignored.\n", n);
-		return(0);
+		return 0;
 	}
 	if (n < BREAK_1) {
 		rand_type = TYPE_0;

src/postProcessing/functionObjects/field/fieldAverage/controlDict

@@ -45,7 +45,7 @@ timePrecision   6;
 runTimeModifiable yes;
 
 functions
-(
+{
     fieldAverage1
     {
         // Type of functionObject
@@ -54,23 +54,24 @@ functions
         // Where to load it from (if not already in solver)
         functionObjectLibs ("libfieldAverage.so");
 
-        // Fields to be  averaged - runTime modifiable
+        // Fields to be averaged - runTime modifiable
         fields
         (
             U
             {
-                mean            on;
-                prime2Mean      on;
-                base            time;
+                mean        on;
+                prime2Mean  on;
+                base        time;
             }
+
             p
             {
-                mean            on;
-                prime2Mean      on;
-                base            time;
+                mean        on;
+                prime2Mean  on;
+                base        time;
             }
         );
     }
-);
+}
 
 // ************************************************************************* //