[MacPorts] #51207: moc: update to version 2.6-alpha1, fix ffmpeg 3.0 build issues

[MacPorts]

#51207: moc: update to version 2.6-alpha1, fix ffmpeg 3.0 build issues
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 Reporter:  devans@…  |      Owner:  eu@…
     Type:  update    |     Status:  new
 Priority:  Normal    |  Milestone:
Component:  ports     |    Version:
 Keywords:  haspatch  |       Port:  moc
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 As noted in #50694, the current version of moc fails to build with ffmpeg
 3.0+ due to the use of deprecated API removed in 3.0.

 Attached is a proposed patch that updates moc to version 2.6-alpha1 with
 additional upstream patches (svn 2782-2785, 2800) that address the ffmpeg
 3.0 issues.  Outdated patches have been removed, master_sites and
 livecheck updated. The resulting update builds correctly using either the
 current ffmpeg 2.8.6 or ffmpeg 3.0+.  I suggest committing these changes
 now allowing the port to be updated to ffmpeg 3.0 with a simple revbump
 when that port is committed.

 Let me know if this is OK to commit.

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Ticket URL: <https://trac.macports.org/ticket/51207>
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