[MacPorts] #35191: kelbt: update to 0.15

[MacPorts]

#35191: kelbt: update to 0.15
-------------------------------------+--------------------------------------
 Reporter:  ryandesign@…             |       Owner:  wiml@…       
     Type:  update                   |      Status:  new          
 Priority:  Normal                   |   Milestone:               
Component:  ports                    |     Version:  2.1.1        
 Keywords:  haspatch                 |        Port:  kelbt        
-------------------------------------+--------------------------------------
 This patch updates kelbt in the following ways:

  * updates to version 0.15
  * simplifies how it gets the -arch flags
  * [wiki:PortfileRecipes#doc installs documentation files]
  * fixes the livecheck

 Please let me know if you have any objections or if I may commit it.

-- 
Ticket URL: <https://trac.macports.org/ticket/35191>
MacPorts <http://www.macports.org/>
Ports system for Mac OS