Enables --std=c++0x compiler option.

Summary: Enables --std=c++0x compiler option.

Test Plan: The evaluator is not working locally, but what could possibly go wrong?

Reviewers: bogdan2412, adrian.budau, pauldb89

Reviewed By: bogdan2412

CC: echipa-infoarena

Differential Revision: https://hackers.infoarena.ro/D21