SHARK-197. hive-exec test artifacts needs to have correct classifiers.

Hive-proper tries to distinguish artifacts by using different names, and
keeping artifactId the same. Which would never work of course. The correct way
is to use classifiers.
Merge pull request #34 from c0s/shark-0.9

SHARK-197. hive-exec test artifacts needs to have correct classifiers.
Merge branch 'shark-0.9' of https://github.com/amplab/hive into shark-0.9-csd