[scala] Add ClosureCleaner for Scala Lambdas
[docs] Fix paths to work with local builds

Local builds of the docs without a web server (e.g. ./build_docs.sh -p)
were not working. This commit fixes this.
[runtime] CaseClassSerializer correctly treated as stateful
[scala] Fix slow building of adjacency list in Scala PageRank
Rewrite TPC-H Q3 to use Long instead of Integer

Both Java and Scala version fixed.
[scala] Add equals() to TraversableTypeInfo
Removed TypeSerializerFactory from ScalaCsvInputFormat. The TypeSerializer is now serialized directly.
[FLINK-1270] [APIs] FS.get() supports relative paths

This closes #224
[FLINK-1095] [clients] Remove '-d' option in info from CliFrontend

This closes #238
[FLINK-1273] [runtime] Add Void type to basic types

Add optional test for external sorting of case classes.
Fix various warnings.
Upgraded HBase addon to HBase 0.98.x and new Tuple APIs
[FLINK-1290] Fix Optimizer to create plans when encountering incompatible partitionings.
[scala] [runtime] Add extra tests for sorting of case classes
deprecated current aggregation code
Test cases and API for new aggregations
ungrouped aggregations
grouped aggregations
missing license headers
moved AggregationUdf into correct package
name the aggregation operator in the DAG