Julian Ospald ef66a24f87 Improve error handling ...

* remove some obsolete functions and error types from HPath.IO.Errors
  that are completely unused
* reworked the RecursiveFailure type to contain more information,
  so we can use it to programmatically make useful choices
  without examining the weakly types IO error attributes (like
  'ioGetFileName')

2016-06-14 19:13:25 +02:00

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