[MacPorts] #44719: Add port cantera

[MacPorts]

#44719: Add port cantera
-------------------------+--------------------------------
  Reporter:  macports@…  |      Owner:  macports-tickets@…
      Type:  submission  |     Status:  new
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:  2.3.1
Resolution:              |   Keywords:
      Port:  cantera     |
-------------------------+--------------------------------

Comment (by macports@…):

 Thanks, I changed it!
 I assume that the curly braces only make a difference if you use compounds
 like ${python.version}. Also, $prefix without curly braces is often used
 in the MacPorts Guide. Nevertheless, I changed it in the cantera Portfile.

-- 
Ticket URL: <https://trac.macports.org/ticket/44719#comment:14>
MacPorts <http://www.macports.org/>
Ports system for OS X