[MacPorts] #66875: wcstools: Add libwcs subport

[MacPorts]

#66875: wcstools: Add libwcs subport
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 Reporter:  ryandesign  |      Owner:  lpsinger
     Type:  request     |     Status:  assigned
 Priority:  Normal      |  Milestone:
Component:  ports       |    Version:
 Keywords:              |       Port:  wcstools, libwcs
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 funtools has a bundled copy of libwcs but it is outdated, and generally we
 want to use MacPorts-provided copies of libraries anyway, but we don't
 appear to have a port for libwcs yet, and the wcstools port doesn't
 install libwcs.

 We do have a wcslib port but that appears to be a different software
 package.

 I suggest that a libwcs subport of the wcstools port should be created.

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Ticket URL: <https://trac.macports.org/ticket/66875>
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