[perl6/specs] 29d402: Specify IO.* return values and Nil on failure

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/perl6/specs
  Commit: 29d4026292c58b11c310022caf6fbb67aed973eb
      
https://github.com/perl6/specs/commit/29d4026292c58b11c310022caf6fbb67aed973eb
  Author: Elizabeth Mattijsen <l...@dijkmat.nl>
  Date:   2014-05-25 (Sun, 25 May 2014)

  Changed paths:
    M S32-setting-library/IO.pod

  Log Message:
  -----------
  Specify IO.* return values and Nil on failure