Benchmarks mostly reorganized & cleaned up. Simplified for re-runs.

Recyclable.Collections.Benchmarks/POC/RecyclableListPoc.Benchmarks.cs

@@ -0,0 +1,14 @@
+namespace Recyclable.Collections.Benchmarks.POC
+{
+	public partial class RecyclableListPocBenchmarks : PocBenchmarkBase
+	{
+		public static void Run()
+		{
+			var benchmark = new RecyclableListPocBenchmarks();
+			benchmark.RecyclableList_EnsureCapacity_Old_ByPowOf2();
+			benchmark.RecyclableList_EnsureCapacity_ByPowOf2();
+			benchmark.RecyclableList_EnsureCapacity_Old_ByBlockSize();
+			benchmark.RecyclableList_EnsureCapacity_ByBlockSize();
+		}
+	}
+}