ASX delivers marginal gain, oil price pain continues, Evolution spikes The S&P/ASX200 (ASX: XJO) managed to eke out a positive day, gaining 0.1 per cent or just 9 points as selling pressure from the banks offset solid gains in the rest of the market. The financial sector fell 0.6 per cent with the Commonwealth Bank (ASX: CBA) giving back another 1.6 per cent. The…