Packing an omex archive with UNICODE-named files corrupts the archive.

[CodeByDrescher]

As the title suggests, no unicode characters can be present in entry names, else upon attempting to unzip the archive, errors are thrown with illegal file names (tested using character é).

A fix was found: remove the explicit encoding of CombineArchive.java:216, and the files are packed and read properly by a variety of tools.

                Map<String, String> zip_properties = new HashMap<String, String> ();
		zip_properties.put ("create", "true");
//		zip_properties.put ("encoding", "UTF-8");
		boolean existingArchive = zipFile.exists ();