plexus-metadata-generator-2.1.0-bp152.1.23

- Upgrade to version 2.1.0
- Removed patch:
  * 0001-Port-to-current-qdox.patch
    + integrated upstream
- Added patches:
  * plexus-containers-asm6.patch
    + allow building against asm6
  * plexus-metadata-generator-cli.patch
    + bring back the PlexusMetadataGeneratorCli.java removed by
    upstream, but which we use heavily

- Remove reference to parent pom, since we are not building with
  Maven.
- Clean the classpath of the script to include only neede jars

- plexus-metadata-generator.spec: Describe package, not project.

- Add another spec file to build plexus-metadata-generator in order
  to be able to generate plexus components.xml descriptor
- Added patch:
  * plexus-metadata-generator-nomojo.patch
    + Allow building this command-line tool without needing to use
    exceptions defined in maven-plugin-api

- Describe package, not project.

- Initial packaging of plexus-containers 1.7.1
- Generate and customize ant build files
- Leave out the plexus-component-metadata that will be built
  by a different spec file