It turns out this is on purpose, was configured that way by this Jira: https://issues.apache.org/jira/browse/UIMA-3247
The thinking was that this is an archival packaging of all the source, and is part of the distribution, but shouldn't be part of maven's repo which is designed for active use. So, we deploy things to maven repos like javadocs, sources.jar, etc., which are useful for IDEs which can automatically pull the source when debugging, etc. -Marshall
