[MacPorts] #40655: Implement proc handle_option-prepend

[MacPorts]

#40655: Implement proc handle_option-prepend
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  Reporter:  ryandesign@…  |      Owner:  macports-tickets@…
      Type:  enhancement   |     Status:  closed
  Priority:  Normal        |  Milestone:  MacPorts Future
 Component:  base          |    Version:
Resolution:  fixed         |   Keywords:  haspatch
      Port:                |
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Comment (by ryandesign@…):

 I did [ticket:40704 notice] that those tests were failing but I don't see
 how this change would cause that. Also I can't reproduce it on my system
 so I thought it was something special to the buildbots.

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Ticket URL: <https://trac.macports.org/ticket/40655#comment:7>
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