[MacPorts] #64924: openjdk## ports should be meta ports

[MacPorts]

#64924: openjdk## ports should be meta ports
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 Reporter:  zman0900     |      Owner:  usersxx
     Type:  enhancement  |     Status:  assigned
 Priority:  Normal       |  Milestone:
Component:  ports        |    Version:
 Keywords:               |       Port:  openjdk17 openjdk11 openjdk8
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 The openjdk ports were previously meta packages, but now are not and also
 depend on "openjdk##-bootstrap".  As a meta ports, this seemed to allow
 other ports to just depend on "openjdk11" or "openjdk17", while the user
 could choose which actual implementation to install, such as
 "openjdk17-temurin".

 Now if I want to use "openjdk17-temurin" and also have, for example,
 "dbeaver-community" installed (dependency on "openjdk17"), my system ends
 up with 3 separate JDKs installed - "/Library/Java/JavaVirtualMachines/"
 contains "openjdk17", "openjdk17-bootstrap", and "openjdk17-temurin".

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Ticket URL: <https://trac.macports.org/ticket/64924>
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