Adding options to use blocks in ‘if’ statements and to use the commons-lang3 library.

Ensure backward compatibility.
Screenshots:
![commons4epreferences](https://cloud.githubusercontent.com/assets/9053119/4589407/30ba9780-5053-11e4-93e5-705d0b4955b9.png)
![commons4egeneratedcode](https://cloud.githubusercontent.com/assets/9053119/4589437/b1ac9d5c-5053-11e4-905a-c60c602b0c8b.png)