[MacPorts] #69202: Provide config.log from builders

[MacPorts]

#69202: Provide config.log from builders
---------------------------+---------------------
 Reporter:  Dave-Allured   |      Owner:  admin@…
     Type:  defect         |     Status:  new
 Priority:  Normal         |  Milestone:
Component:  buildbot/mpbb  |    Version:
 Keywords:  buildbot       |       Port:
---------------------------+---------------------
 Add config.log to available builder outputs, in addition to stdio and
 main.log.  This is important for obscure failures from `configure`.

 Was previously requested in mega-ticket:
 https://trac.macports.org/ticket/51995

-- 
Ticket URL: <https://trac.macports.org/ticket/69202>
MacPorts <https://www.macports.org/>
Ports system for macOS