tweeks to the c tests

also figured out hello was caching stopped that to make results
comparable
even wrote a hello assembler version which is just 10% faster than soml
:-)

test/bench/c/itos.c

@@ -4,7 +4,7 @@ int main(void)
 {
 	char stringa[20] ;
 
-	int counter = 98304 + 1696;
+	int counter = 100352 - 352;
 	while(counter--) {
     sprintf(stringa, "%i\n" , counter);
 	}