[MacPorts] #42654: cmake: upgrade to 3.0.0

[MacPorts]

#42654: cmake: upgrade to 3.0.0
----------------------+-------------------
  Reporter:  mojca@…  |      Owner:  css@…
      Type:  update   |     Status:  new
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:
Resolution:           |   Keywords:
      Port:  cmake    |
----------------------+-------------------

Comment (by css@…):

 I haven't looked at the impact of the changes, but should we consider
 separate cmake2 and cmake3 ports to allow trying both?

-- 
Ticket URL: <https://trac.macports.org/ticket/42654#comment:8>
MacPorts <http://www.macports.org/>
Ports system for OS X