[MRESOLVER-587] Memory usage improvements #537
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Do not use Artifact instance as keys, and intern the List<Dependency> on artifact descriptors as well. --- https://issues.apache.org/jira/browse/MRESOLVER-587
(default: false to both, as before) Adds two new config properties that controls interning of ArtifactDescriptor dependencies and managedDependencies. Interning both radically lower memory consumption but at same time increases runtime.
Intern only managed deps. Also simplify a bit.
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Do not use
Objectas descriptor key, use dedicated type. And intern theList<Dependency>on artifact descriptors. Also introduce "intern"-ing of ArtifactDescriptor dependencies and managedDependencies that is configurable (speed vs memory).https://issues.apache.org/jira/browse/MRESOLVER-587