Double check that package_content are set correctly in Maven package sets.

[pombredanne]

Some PURLs may not be classified correctly in their Package set:

    "package_content": "source_repo",
    "purl": "pkg:maven/org.apache.htrace/[email protected]?classifier=sources

.... should be a source_archive

    "package_content": "source_archive",
    "purl": "pkg:maven/org.apache.htrace/[email protected]",

... should be a binary archive