add simple loop bench

fiddled with run numbers a bit
recording times with noop removed
results slightly worse than hoped

test/bench/c/hello.c

@@ -3,7 +3,7 @@
 int main(void)
 {
   setbuf(stdout, NULL); /* to make it equivalent to the other versions, otherwise it caches */
-  int counter = 100000;
+  int counter = 10000;
 	while(counter--) {
     printf("Hello there\n");
 	}