Create files package

The `files` package contains modules that perform file operations.

Author: cboehme

src/main/java/org/culturegraph/mf/stream/source/DirReader.java renamed to src/main/java/org/culturegraph/mf/files/DirReader.java

@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.culturegraph.mf.stream.source;
+package org.culturegraph.mf.files;
 
 import java.io.File;
 import java.io.FilenameFilter;

src/main/java/org/culturegraph/mf/stream/pipe/FileDigestCalculator.java renamed to src/main/java/org/culturegraph/mf/files/FileDigestCalculator.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2013, 2014, 2016 Christoph Böhme
+ * Copyright 2016 Christoph Böhme
  *
  * Licensed under the Apache License, Version 2.0 the "License";
  * you may not use this file except in compliance with the License.
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.culturegraph.mf.stream.pipe;
+package org.culturegraph.mf.files;
 
 import java.io.FileInputStream;
 import java.io.IOException;

src/main/resources/flux-commands.properties

@@ -21,7 +21,7 @@ open-resource org.culturegraph.mf.stream.source.ResourceOpener
 open-tar org.culturegraph.mf.stream.source.TarReader
 
 read-string org.culturegraph.mf.strings.StringReader
-read-dir	org.culturegraph.mf.stream.source.DirReader
+read-dir	org.culturegraph.mf.files.DirReader
 read-triples	org.culturegraph.mf.stream.source.TripleReader
 
 retrieve-triple-objects org.culturegraph.mf.stream.pipe.TripleObjectRetriever
@@ -134,7 +134,7 @@ split-xml-elements	org.culturegraph.mf.stream.pipe.XmlElementSplitter
 morph	org.culturegraph.mf.metamorph.Metamorph
 filter	org.culturegraph.mf.metamorph.Filter
 add-oreaggregation	org.culturegraph.mf.stream.pipe.OreAggregationAdder
-digest-file	org.culturegraph.mf.stream.pipe.FileDigestCalculator
+digest-file	org.culturegraph.mf.files.FileDigestCalculator
 reorder-triple	org.culturegraph.mf.stream.pipe.TripleReorder
 
 json-to-elasticsearch-bulk org.culturegraph.mf.stream.converter.JsonToElasticsearchBulk