move c benchmarks to own directory

test/bench/c/adds.c

@@ -0,0 +1,27 @@
+#include<stdio.h>
+
+int fibo(int n){
+  int result;
+	int a = 0;
+	int b = 1;
+	int i = 1;
+  while( i < n )
+  {
+      result = a + b;
+      a = b;
+      b = result;
+      i++;
+  }
+	return result;
+}
+
+int main(void)
+{
+	int counter = 98304 + 1696;
+	int counter2 = counter;
+	int level = 40;
+	int fib ;
+	while(counter--) {
+		fib = fibo(level);
+	}
+}