Update bin/dev/run-tests-from-scratch now that Hadoop agnostic builds have been
merged into Spark master. See https://github.com/mesos/spark/pull/838
Update a comment I missed when migrating to Hadoop agnostic build.
Typos in exporting spark build vars.
Update default version of Hadoop. As of https://github.com/mesos/spark/pull/838/files
version 1.0.4 is the oldest version supported now (thus 0.20.205.0 is not supported any more).
Merge pull request #133 from andyk/master

Update Shark build file now that hadoop agnostic build update has been merged into Spark master