handle FileAlreadyExist' exception when driver tries to add certain files twice.
Implemented an alternative to #656 that improves on the error message
Merge branch 'master' of https://github.com/Microsoft-CISL/REEF into weimer_alternative_to_656
fix reef.sh to work with the new shaded JAR for the examples
DBC model and other .NET example change
DBC model change 2
undo the handling of FileAlreadyExistsException exception
Merge branch 'master' of https://github.com/Microsoft-CISL/REEF into YingdaReef

Conflicts:
	reef-examples/src/main/java/com/microsoft/reef/examples/retained_evalCLR/Launch.java
remove REEF_JAR_FILE to be comply with recent changes
Merge pull request #663 from Microsoft-CISL/YingdaReef

DBC model
update run.cmd to be compatible with REEF_JAR changes
Merge pull request #664 from Microsoft-CISL/YingdaReef

update run.cmd to be compatible with REEF_JAR changes
Changedt the POM to filter out the hadoop configuration
adding hdfs jar locations in run.cmd to resolve the hdfs-not-valid-fs
Added the hadoop-hdfs dependency to reef-examples
Merge branch 'master' of https://github.com/Microsoft-CISL/REEF into weimer_pom_update
Merge pull request #667 from Microsoft-CISL/weimer_pom_update

Merging this myself as it is really quite simple.
Merge pull request #666 from Microsoft-CISL/weimer_removeConfFromJAR

Merging this myself as it is really quite simple.
Merge pull request #665 from Microsoft-CISL/YingdaReef

adding hdfs jar locations in run.cmd to resolve the hdfs-not-valid-fs
Merge pull request #661 from Microsoft-CISL/weimer_alternative_to_656

Better error messages when duplicate file names are added