[MacPorts] #44501: open-cobol @1.1: update to 2.0

[MacPorts]

#44501: open-cobol @1.1: update to 2.0
-------------------------+---------------------------------
  Reporter:  egall@…     |      Owner:  macports-tickets@…
      Type:  update      |     Status:  new
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:  2.3.1
Resolution:              |   Keywords:  haspatch maintainer
      Port:  open-cobol  |
-------------------------+---------------------------------

Comment (by khindenburg@…):

 Are these "issues" enough to blacklist clang?

 {{{
 Warning: open-cobol has issues with clang
 --->  Building open-cobol
 --->  Testing open-cobol
 Warning: cannot run cobc without an installed default.conf
 Warning: cobc failed to produce any output
 }}}

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Ticket URL: <https://trac.macports.org/ticket/44501#comment:3>
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