[MacPorts] #44723: fswatch @1.4.1 update

[MacPorts]

#44723: fswatch @1.4.1 update
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 Reporter:  enrico.m.crisostomo@…  |      Owner:  macports-tickets@…
     Type:  update                 |     Status:  new
 Priority:  Normal                 |  Milestone:
Component:  ports                  |    Version:  2.3.1
 Keywords:                         |       Port:  fswatch
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 Added Autoconf checks for required C++ classes which were failing on OS X
 < 10.9 (mutex and atomic).

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Ticket URL: <https://trac.macports.org/ticket/44723>
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