…class

- Move namespace/name splitting to the Type.GetType code paths
- Move exported type handling into the normal PopulateAvailableClass flow
- Remove unnecessary work done to detect typedef name duplicates. We don't attempt to protect against invaild assemblies anymore
- Unify path for insertion between ExportedType and TypeDef records, also unify the path for nested vs non-nested
- Fix logic which implements inserts into the case insensitive table when dynamically adding entries to the ExportedType table (Previously it didn't work)
- Update the ECMA 335 augments to capture the requirement that nested ExportedTypes must have a higher RID than the enclosing ExportedType
  - This requirement has actually always existed since .NET 1.0, but was never recorded

…h a manner

…is a linear scan of the entire typedef table, and we already have the right hash to make this cheap

- Also make the code more DAC correct (probably not completely correct, but this logic does not appear to actually be used within the DAC)

… add path