Accenture, the US-listed IT behemoth, has provided some much-needed Christmas cheer to Indian IT companies. The company, which follows a September to August reporting period, has upped its full-year guidance, raising expectations that the long-hoped-for boost in customer confidence and, as a result, spending, is truly underway. Accenture raised its guidance to 4%-7% in constant currency terms, which strips out volatility to foreign exchange