fix invalid nightly stratosphere build for hadoop1
[travis] Fix some ruby dependencies for travis, see
https://github.com/travis-ci/travis-artifacts/issues/23
Replication properties are not pushed down.
[yarn] use unique appId in to store jar in hdfs
[dist] deploy yarn in a separate compressed file
[yarn] fixed yarn binary; implemented a simple but effective shutdown mechanism for the yarn-session
[yarn] deploy new yarn.tgz with travis, fix file permission in binary
added Cross Prog for API implementation
Unified operator translation
compiling
cleanup
Added join example prog and fix in join operator
work on cogroup
Merge remote-tracking branch 'fabianHueske/japi' into japi_cogroup
work in progress
Added cross operator to new Java API
Log rotation for start-local.bat
Initial commit for join operator for new Java API
Added missing Apache license header
Cogroup Implementation

Merge branch 'japi_cogroup' into japi_cogroup2

Conflicts:
	stratosphere-compiler/src/main/java/eu/stratosphere/compiler/postpass/JavaApiPostPass.java
	stratosphere-java/src/main/java/eu/stratosphere/api/java/operators/JoinOperator.java
	stratosphere-java/src/main/java/eu/stratosphere/api/java/operators/translation/PlanCrossOperator.java