[MacPorts] #52345: emacs-app @24.5_3: update to 25.1 to match emacs

[MacPorts]

#52345: emacs-app @24.5_3: update to 25.1 to match emacs
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  Reporter:  Maurizio.Loreti@…  |      Owner:  hum@…
      Type:  update             |     Status:  new
  Priority:  Normal             |  Milestone:
 Component:  ports              |    Version:
Resolution:                     |   Keywords:
      Port:  emacs-app          |
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Comment (by drkp):

 Any reason not to merge emacs-app into the emacs portfile as a subport?
 Seems like there's a lot of duplication between the two, and that ought to
 make it easier to maintain.

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Ticket URL: <https://trac.macports.org/ticket/52345#comment:9>
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