[directory] status of HsDirectory.h

I noticed that there aren't many things left in the HsDirectory.h: - macros from autoconf - __hscore_long_path_size - __hscore_S_IRUSR/IWUSR/IXUSR/IFDIR Most of these could be done easily using hsc so I was tempted to remove them. Not to mention, the implementation of __hscore_long_path_size is rather dangerous on systems where PATH_MAX is not defined.[1] However, I wonder if the __hscore prefix has any significance. Are these functions by any chance used in GHC internals or some other libraries? For now I intend to leave them as is. But if no-one else uses them, then I think the header should be deprecated and made private in the future. [1]: http://pubs.opengroup.org/onlinepubs/9699919799 -- Phil