[MacPorts] #53814: samba4: update to 4.6.0

[MacPorts]

#53814: samba4: update to 4.6.0
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 Reporter:  sierkb  |      Owner:
     Type:  update  |     Status:  new
 Priority:  Normal  |  Milestone:
Component:  ports   |    Version:
 Keywords:          |       Port:  samba4
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 Please update samba4 port to most recent stable version (4.6.0 as of 07
 March 2017).

 Samba Latest News (07 March 2017): Samba 4.6.0 Available for Download
 [https://www.samba.org/samba/latest_news.html#4.6.0]

 Samba 4.6.0 Release Announcement
 [https://www.samba.org/samba/history/samba-4.6.0.html]

 Samba 4.6 Features added/changed
 [https://wiki.samba.org/index.php/Samba_4.6_Features_added/changed]

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Ticket URL: <https://trac.macports.org/ticket/53814>
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