Blocked revisions 87356 via svnmerge

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  r87356 | r.david.murray | 2010-12-17 22:48:32 -0500 (Fri, 17 Dec 2010) | 11 lines

  #9907: call rl_initialize early when using editline on OSX

  editline rl_initialize apparently discards any mappings done before it
  is called, which makes tab revert to file completion instead of inserting
  a tab.  So now on OSX we call rl_initialize first if we are using
  readline, and then re-read the users .editrc (if any) afterward so they
  can still override our defaults.

  Patch by Ned Deily, modified by Ronald Oussoren.
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