Make new directory nls, and add platform-depended text encoding as System.Native_Encoding
Add overloaded System.Native_Encoding.Convert and improve System.Native_Encoding.Generic_String
Reorder
Remark
Change substitutes of System.Native_Encoding
Improve indexing of System.Native_Encoding
Add System.Native_Encoding.Min_Size_In_Stream_Elements and Min_Size_In_From_Stream_Elements
Fix error handling of System.Native_Encoding in Windows
Rename type System.Native_Encoding.Error_Status to Status_Type, and remove its representation clause
Improve System.Native_Encoding in the case of an insufficient buffer
Improve System.Native_Encoding.Encoding_Streams
Fix Ada.Streams.Buffer_Storage_IO to raise End_Error
Improve System.Native_Encoding in finishing iconv backend
Fix System.Native_Encoding.Encoding_Streams for the case of 'Read does not raise End_Error
Use ICU instead of iconv in Darwin
Reorder
Improve System.Native_Encoding.Encoding_Streams
Improve System.Native_Encoding.Encoding_Streams and fix some bugs
Reduce implicit elaboration code of System.Native_Encoding.Encoding_Streams
Remark