Better cache in ConditionEvaluator
Better cache in ConditionEvaluator

The new cache acts like a pool of condition expression trees

jeffkl/msbuild,rainersigwald/msbuild,cdmihai/msbuild,jeffkl/msbuild,chipitsine/msbuild,AndyGerlicher/msbuild,sean-gilliam/msbuild,AndyGerlicher/msbuild,cdmihai/msbuild,Microsoft/msbuild,cdmihai/msbuild,chipitsine/msbuild,Microsoft/msbuild,mono/msbuild,Microsoft/msbuild,chipitsine/msbuild,sean-gilliam/msbuild,mono/msbuild,jeffkl/msbuild,cdmihai/msbuild,Microsoft/msbuild,rainersigwald/msbuild,jeffkl/msbuild,mono/msbuild,sean-gilliam/msbuild,AndyGerlicher/msbuild,AndyGerlicher/msbuild,sean-gilliam/msbuild,rainersigwald/msbuild,chipitsine/msbuild,mono/msbuild,rainersigwald/msbuild