John Scipione 880e147bd9 Node Monitor documentation updates to stop_watching().
* Add a note to stop_watching() about the asynchronous nature of node
  monitoring and its consequences.
* Also update the breif description and parameters of stop_watching().
* Detail the return values of stop_watching() a bit better.
* Add a note (an \attention actually) to B_STOP_WATCHING flag.
* Fix a spelling mistake and other minor fixes.
2013-03-04 19:24:31 -05:00
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