benchmarking: fix runtime regression for require.cache (#257)

Reported regression was due to underlying runner.runBenchmarks()
function. Workaround is to revert the order of functions require.new
and require.cache.

PR-URL: nodejs/benchmarking#257
Fixes: nodejs/benchmarking#202
Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>

experimental/benchmarks/node-api/require/require.perf.js

@@ -8,12 +8,12 @@ if (module === require.main) {
 }
 
 function runBenchmarks(count) {
-    runner.runBenchmarks('require.new', function(suite) {
-        runner.buildNTests(count, 'require.new', suite, newRequire);
-    });
     runner.runBenchmarks('require.cached', function(suite) {
         runner.buildNTests(count, 'require.cached', suite, cachedRequire);
     });
+    runner.runBenchmarks('require.new', function(suite) {
+        runner.buildNTests(count, 'require.new', suite, newRequire);
+    });
 }
 
 module.exports = runBenchmarks;