When all dependencies are already in the local `~/.m2/repository/` we should not be needing an internet connection. ("Offline" mode should be automatic)
patch by Mick Semb Wever; reviewed by Brandon Williams for CASSANDRA-16559
- This removes lib/ from version control.
- The generated pom files are now the source of truth to the project's depdendencies, and the lib/ folder re-created during the build from compile scope dependencies excluding provided and system scopes. Project dependencies are first downloaded to the maven local repository at `~/.m2/repository`.
- Maven is now required to be installed to build, that is the `mvn` command needs to be found in the path.
- The new resolver-ant-tasks targets have been encapsulated into the `build/build-resolver.xml` ant file.
- Most classpaths in build.xml are replaced with resolver:resolve definitions.
- The build-deps-pom generated pom file is now only used for declaring test dependencies.
patch by Mick Semb Wever; reviewed by Brandon Williams for CASSANDRA-16391
Mick Semb Wever