[PLAT-4691] Adding second getResults() method to swap theta to allow the graph to build

Conflicts:
	projects/OG-Analytics/src/main/java/com/opengamma/analytics/financial/interestrate/PresentValueCalculator.java
	projects/OG-Analytics/src/main/java/com/opengamma/analytics/financial/interestrate/PresentValueCurveSensitivityCalculator.java
	projects/OG-Financial/src/main/java/com/opengamma/financial/analytics/model/horizon/SwapConstantSpreadThetaFunction.java