Test comparing dynamic shadow code against static shadow code

[voidstar69]

Created test to compare dynamic shadow code against static shadow code. Allowed IntersectionInfo objects to be compared.

[voidstar69]

The new test causes this error:

Failed DynamicVsStaticShadowMethods
Error Message:
Test method Engine3D_Tests.Raytrace.ShadowMethodTests.DynamicVsStaticShadowMethods threw exception:
System.IO.DirectoryNotFoundException: Could not find a part of the path 'C:\Temp_res10.cache'.
Stack Trace:
at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
at System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy, Boolean useLongPath, Boolean checkHost)
at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share)
at Engine3D.Raytrace.Texture3DCache1.SaveCacheToDisk(String cacheFilePath, T[] cacheData) in c:\projects\softray\Engine3D\Raytrace\Texture3DCache.cs:line 183 at Engine3D.Raytrace.Texture3DCache1.Sample(Vector pos) in c:\projects\softray\Engine3D\Raytrace\Texture3DCache.cs:line 130
at Engine3D.Raytrace.ShadowMethod.IntersectRay(Vector start, Vector dir, RenderContext context) in c:\projects\softray\Engine3D\Raytrace\ShadowMethod.cs:line 111
at Engine3D_Tests.Raytrace.ShadowMethodTests.DynamicVsStaticShadowMethods() in c:\projects\softray\Engine3D\Engine3D-Tests\Raytrace\ShadowMethodTests.cs:line 41