Renamed JacocoTaskExtension.destPath to destinationFile, classDumpPath to classDumpFile, and JacocoMerge.destFile to destinationFile.
Removed some diagnostics
Fixed typo in test name, plus a little simplification.
Some detangling of dependency edge and the module version selector state in DependencyGraphBuilder.
Further detangling in DependencyGraphBuilder, so that now the selector for a given dependency edge is now final. Also replaced some usages of Ivy id types with Gradle id types.