[MacPorts] #53527: base: 2.3.5 to 2.4.0 upgrade fails with 'no configure script found in vendor/tcl/unix'

[MacPorts]

#53527: base: 2.3.5 to 2.4.0 upgrade fails with 'no configure script found in
vendor/tcl/unix'
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 Reporter:  Xof     |      Owner:
     Type:  defect  |     Status:  new
 Priority:  Normal  |  Milestone:
Component:  base    |    Version:  2.4.0
 Keywords:          |       Port:
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 See attached port -v selfupdate output.

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Ticket URL: <https://trac.macports.org/ticket/53527>
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