[MacPorts] #37199: Update log4c to latest version

[MacPorts]

#37199: Update log4c to latest version
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  Reporter:  egall@…  |      Owner:  skroll@…
      Type:  update   |     Status:  new
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:
Resolution:           |   Keywords:
      Port:  log4c    |
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Comment (by egall@…):

 ok, attached the patch as requested by mf2k_mp in irc. Besides updating
 the version and checksums, I also added openmaintainer because skroll
 never responded to this.

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Ticket URL: <https://trac.macports.org/ticket/37199#comment:3>
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