ProjectionLambdaTransformer Fields

Flag which signals whether compiled lambda's should be cached (true) or that they have to be compiled every time (false). Switch to false if caching gives memory problems or otherwise odd results.

Static value which has appdomain scope, and which controls the cache size for the compiled lambdas per thread. Every time the cache hits the set limit, it's cleared. Compiling lambda's is done in Select(lambda) calls to create typed projections.