Add another name to flux command "stream-to-xml"

This name points to SimpleXmlEncoder.
Keeping the old name for compatibility reasons.

See #308.

Author: dr0i

metafacture-xml/src/main/resources/flux-commands.properties

@@ -16,6 +16,7 @@
 handle-cg-xml org.metafacture.xml.CGXmlHandler
 handle-generic-xml org.metafacture.xml.GenericXmlHandler
 stream-to-xml org.metafacture.xml.SimpleXmlEncoder
+encode-xml org.metafacture.xml.SimpleXmlEncoder
 decode-xml org.metafacture.xml.XmlDecoder
 split-xml-elements org.metafacture.xml.XmlElementSplitter
 write-xml-files org.metafacture.xml.XmlFilenameWriter