Rename Core path to MainExecPath
Wrap some debug in #if.
Comments about what these paths do.

Everybody likes a good description.
Remove dead LoadBuiltInTypes method.
Add comments to DynamoLoader.

Clarify what this loader does and what is handled by other loaders.
Use DynamoPaths.Asm to find LibG
Assembly resolver updates...

Add error handling which telegraphs the exception with a nicer message.
Add comments to explain how/where this method is used.