Refactoring Android project-level and platform scripts to use Q.js

This eliminates the use of shelljs.exec's sync mode, which is the source
of the filehandle leaks that can cause EMFILE on OSX, and are
CPU-intensive everywhere.

Tested locally, needs poking before it gets released.

bin/node_modules/q/benchmark/compare-with-callbacks.js

@@ -0,0 +1,71 @@
+"use strict";
+
+var Q = require("../q");
+var fs = require("fs");
+
+suite("A single simple async operation", function () {
+    bench("with an immediately-fulfilled promise", function (done) {
+        Q().then(done);
+    });
+
+    bench("with direct setImmediate usage", function (done) {
+        setImmediate(done);
+    });
+
+    bench("with direct setTimeout(…, 0)", function (done) {
+        setTimeout(done, 0);
+    });
+});
+
+suite("A fs.readFile", function () {
+    var denodeified = Q.denodeify(fs.readFile);
+
+    set("iterations", 1000);
+    set("delay", 1000);
+
+    bench("directly, with callbacks", function (done) {
+        fs.readFile(__filename, done);
+    });
+
+    bench("with Q.nfcall", function (done) {
+        Q.nfcall(fs.readFile, __filename).then(done);
+    });
+
+    bench("with a Q.denodeify'ed version", function (done) {
+        denodeified(__filename).then(done);
+    });
+
+    bench("with manual usage of deferred.makeNodeResolver", function (done) {
+        var deferred = Q.defer();
+        fs.readFile(__filename, deferred.makeNodeResolver());
+        deferred.promise.then(done);
+    });
+});
+
+suite("1000 operations in parallel", function () {
+    function makeCounter(desiredCount, ultimateCallback) {
+        var soFar = 0;
+        return function () {
+            if (++soFar === desiredCount) {
+                ultimateCallback();
+            }
+        };
+    }
+    var numberOfOps = 1000;
+
+    bench("with immediately-fulfilled promises", function (done) {
+        var counter = makeCounter(numberOfOps, done);
+
+        for (var i = 0; i < numberOfOps; ++i) {
+            Q().then(counter);
+        }
+    });
+
+    bench("with direct setImmediate usage", function (done) {
+        var counter = makeCounter(numberOfOps, done);
+
+        for (var i = 0; i < numberOfOps; ++i) {
+            setImmediate(counter);
+        }
+    });
+});