append to Cascading frameworks system property instead of setting it directly.
Allow a limit to be specified for the number of open files used by a partitioned source
Adds some output while assembly is building to keep travis happy
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Merge pull request #1084 from twitter/fixTests

Adds some output while assembly is building to keep travis happy
Merge pull request #1076 from fs111/develop

append to Cascading frameworks system property instead of setting it directly
Use option instead of default value.  This change also means that users can specify a threshold less than or equal to zero.  There doesn't seem to be any error checking in Cascading that forbids this, but the end result is that it's as if they passed in a threshold of 1.
Previous commit was incomplete and caused build to fail.  This will fix it...
Merge pull request #1078 from matt-martin/PartitionSourcesWithFileLimit

Allow PartitionSource to limit the number of open files
Merge pull request #1072 from aposwolsky/develop

Enforce invariant: mapGroup iterators all nonempty
bump scalding version to 0.12.0rc5