Changed target type of record layout to plain class to allow serialization
Fixed deserialization of operator output
Merge branch 'master' of https://github.com/AHeise/stratosphere-sopremo

Conflicts:
	meteor/meteor-testing/src/main/java/eu/stratosphere/meteor/MeteorIT.java
	sopremo/sopremo-query/src/main/java/eu/stratosphere/sopremo/query/PackageManager.java
edited imports