Generate source attachments for each subproject

Add methods to get optimized plan from LocalExecutor

Ignore system files when using FileInputFormat

Add an example of using LocalExecutor in WordCount example.

Conflicts:
	.travis.yml
	nephele/nephele-clustermanager/pom.xml
	nephele/nephele-common/pom.xml
	nephele/nephele-compression-bzip2/pom.xml
	nephele/nephele-compression-lzma/pom.xml
	nephele/nephele-compression-snappy/pom.xml
	nephele/nephele-compression-zlib/pom.xml
	nephele/nephele-examples/pom.xml
	nephele/nephele-hdfs/pom.xml
	nephele/nephele-management/pom.xml
	nephele/nephele-profiling/pom.xml
	nephele/nephele-queuescheduler/pom.xml
	nephele/nephele-s3/pom.xml
	nephele/nephele-server/pom.xml
	nephele/nephele-visualization/pom.xml
	nephele/pom.xml
	pact/pact-array-datamodel/pom.xml
	pact/pact-clients/pom.xml
	pact/pact-common/pom.xml
	pact/pact-compiler-tests/pom.xml
	pact/pact-compiler/pom.xml
	pact/pact-examples/pom.xml
	pact/pact-runtime/pom.xml
	pact/pact-tests/pom.xml
	pact/pom.xml
	stratosphere-dist/pom.xml

Switch to using objects instead of classes for usercode

Whole stack is changed so that input/output formats and PACT contracts,
respectively their builders, accept objects in addition to classes for
user code stubs.

So now one can do:
MapContract.builder(new CountWords())
in addition to:
MapContract.builder(CountWords.class)

Objects passed in this way need to be serializable. The advantage is
that one can now pass arguments in the constructor of the stub, store
them in the stub, and they will be available when the stub is run. This
is less cumbersome than using the Configuration to pass parameters.

This change was originally  necessary to allow the scala frontend to generate
usercode objects to pass to PACT contracts.

This is needed for the magic that happens in the scala frontend.

This is needed because the scala frontend will create a custom
PartialSolutionHolder to allow it's magic to happen.

Pact Compiler fix+testcase for SinkJoinerPlanNode

With help from @uce

Support for different Hadoop versions (yarn!) using activation by properties

Remove TeraSort from examples

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

1) Changed profile activation to properties (like hbase) 2) moved all properties to top of pom 3) moved module list to top of pom

FileInputFormat.acceptFile() to filter out files and directories while creating input splits (like _log or _SUCCESS)

Added ALL_GROUP strategy to PlanJSONDumpGenerator.

Added ALL_GROUP strategy to PlanJSONDumpGenerator. Before this fix the pact web could not show the plan.

Fixed nephele-config.sh substr command calls on OS X (closes #88)

Fixed bug. stub.open() was not called for COMBININGSORT local strategy.

Fixed commons-io missing in lib directory + fixed wrong groupId of commons-io

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)