[MacPorts] #54480: VLC: upgrade to 2.2.6 and FFmpeg 3

[MacPorts]

#54480: VLC: upgrade to 2.2.6 and FFmpeg 3
---------------------+---------------------------------
  Reporter:  RJVB    |      Owner:
      Type:  update  |     Status:  new
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:
Resolution:          |   Keywords:  haspatch maintainer
      Port:  VLC     |
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Comment (by l2dy):

 Replying to [comment:11 RJVB]:
 > Attaching a diff against the updated Portfile would have been easier...
 >
 > Anyway, I really dislike that Tcl expansion operator and `port:libVLC-
 devel` exists on my end (subport of the unmaintained VLC-devel) but yeah,
 your modifications should not introduce any behaviour changes.

 Can I commit that as is or should I revert to `eval file delete`?

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Ticket URL: <https://trac.macports.org/ticket/54480#comment:12>
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