Fix stratosphere-dist: Some really outdated README's removed. The README and LICENCE were not copied to the build.

Also fix an annoying bug that made tests fail because a dependency on
scala-reflect was wrongly in the "test" scope.

Also make alle the examples that work implement PlanAssembler and output
generated example jars for these examples to examples/pact-scala in the
distribution.

Remove unused exclude-statements in assembly-descriptor (exclude elements can only define artifacts, not paths)

1) Fixed problem where commons-io jar file was missing in the lib directory 2) Fixed wrong maven group definition of commons-io (changed from org.apache.commons to commons-io) and updated to a more recent version (same as hadoop)

Separated classpaths for cluster and clients.

Cleaned up POM files.

- added JavaDoc build to Maven

- added JavaDoc build to Maven

- added source distribution assembly
- added javadocs to distributions
- renamed binary distribution assembly

- removed println statements from test
- improved pact examples (K-Means and WordCount)