Drop step@0.0.4 from devDependencies

Extend the timeout

Currently the `devDependencies` value in `package.json` lists `"step": "0.0.4"`, but it does not seem that the `step` module is used anywhere.

`test/parallel_insert.test.js` took 134383ms on 2.2GHz single-core Pentium 4 in Windows XP

another try at fixing  build order based on details at https://code.google.com/p/gyp/issues/detail?id=259

Make tar.gz a bundled dependency

Don't bother unpacking sqlite if we're not using it

Move some protected methods to public

Avoid writing to freed memory

Make sure the INSERT completes before trying the SELECT

disable the loadExtension test which will crash when the extension is built against a different external sqlite version than the bundled one (which is likely)

move test/tmp directory creation to sync to avoid race to create directory which will appear as'Error: done() called multiple times' - refs visionmedia/mocha#316

Unpack sqlite dep dynamically and move build node_sqlite3.node module into ./lib folder