Fixup the PrepareResources task to properly augment the classpath in
the exclusives regime.

Undo pingpong example workaround.

Perform minor cleanups on exclusives related code read to grok this
fix.
Merge pull request #174 from foursquare/master

Remove a superfluous encode() call.
Merge pull request #171 from jsirois/jsirois/pants/issue_160

Fixup the PrepareResources task to properly augment the classpath in the exclusives regime.
Revert "Keep the && chain alive in the travis build, a failed pants build should fail fast."

Eric knew what he was doing here of course :/

This reverts commit cf28c12cf8c9f63174ee07d56ed76873baf57d9a.