Add scalding-commons into Build path and fix certain out-of-dated issues.
Add merge strategy for dtd and xsd files.
Add scalding-commons resolvers.
Remove tail space.
Remove scalding-commmons from Build to verify the cause of test failure.
Enable scalding-commmons from Build.
Address Oscar's comments.
Add Twitter Maven resolver for hadoop-lzo in scalding-commons.
Disable multi-thread testing.
Merge pull request #457 from twitter/klin_build_commons

Add scalding-commons into Build path and fix certain out-of-dated issues...