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/CONTRIBUTING.md

@@ -0,0 +1,40 @@
+
+For pull requests:
+
+-   Be consistent with prevalent style and design decisions.
+-   Add a Jasmine spec to `specs/q-spec.js`.
+-   Use `npm test` to avoid regressions.
+-   Run tests in `q-spec/run.html` in as many supported browsers as you
+    can find the will to deal with.
+-   Do not build minified versions; we do this each release.
+-   If you would be so kind, add a note to `CHANGES.md` in an
+    appropriate section:
+
+    -   `Next Major Version` if it introduces backward incompatibilities
+        to code in the wild using documented features.
+    -   `Next Minor Version` if it adds a new feature.
+    -   `Next Patch Version` if it fixes a bug.
+
+For releases:
+
+-   Run `npm test`.
+-   Run tests in `q-spec/run.html` in a representative sample of every
+    browser under the sun.
+-   Run `npm run cover` and make sure you're happy with the results.
+-   Run `npm run minify` and be sure to commit the resulting `q.min.js`.
+-   Note the Gzipped size output by the previous command, and update
+    `README.md` if it has changed to 1 significant digit.
+-   Stash any local changes.
+-   Update `CHANGES.md` to reflect all changes in the differences
+    between `HEAD` and the previous tagged version.  Give credit where
+    credit is due.
+-   Update `README.md` to address all new, non-experimental features.
+-   Update the API reference on the Wiki to reflect all non-experimental
+    features.
+-   Use `npm version major|minor|patch` to update `package.json`,
+    commit, and tag the new version.
+-   Use `npm publish` to send up a new release.
+-   Send an email to the q-continuum mailing list announcing the new
+    release and the notes from the change log.  This helps folks
+    maintaining other package ecosystems.
+