[MacPorts] #14249: Add libXt - X Toolkit Intrinsics

[MacPorts]

#14249: Add libXt - X Toolkit Intrinsics
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  Reporter:  mvfranz at gmail.com  |       Owner:  ram at macports.org
      Type:  enhancement        |      Status:  assigned        
  Priority:  Normal             |   Milestone:  Port Submissions
 Component:  ports              |     Version:  1.6.0           
Resolution:                     |    Keywords:                  
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Comment (by ram at macports.org):

 in the dependencies you've commented out ```port:xorg-libX11``` I take it
 that this port depends on libX11, but builds fine with the system X11?

 You can specify this dependency as: ```lib:libX11.6:xorg-libX11``` which
 will use the system version, if available, or the xorg-libX11 port
 otherwise.

 Is this the case?

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Ticket URL: <http://trac.macosforge.org/projects/macports/ticket/14249#comment:4>
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