Update backbone.js to 1.1.2.
Update backbone.js to 1.1.2.

Fix backward compatibility of `this.options`.
Update backbone.js to 1.1.2.

Fix backward compatibility of `this.options`.
Update backbone.js to 1.1.2.

Fix backward compatibility of `this.options`.
Update backbone.js to 1.1.2.

Fix backward compatibility of `this.options`.
Update backbone.js to 1.1.2.

Fix backward compatibility of `this.options`.
Merge pull request #1535 from vogdb/issue-1535

Update backbone.js from 1.0.0 to 1.1.2.