Increased portability by enforcing UTF8 on tar stream

Author: krosenvold

src/main/java/org/codehaus/plexus/archiver/tar/TarFile.java

@@ -174,7 +174,7 @@ private InputStream getInputStream( TarArchiveEntry entry, TarArchiveEntry curre
     private void open()
         throws IOException
     {
-        inputStream = new TarArchiveInputStream( getInputStream( file ) );
+        inputStream = new TarArchiveInputStream( getInputStream( file ), "UTF8" );
     }
 
     private boolean findEntry( TarArchiveEntry entry, TarArchiveEntry currentEntry)

src/main/java/org/codehaus/plexus/archiver/zip/AbstractZipArchiver.java

@@ -295,6 +295,7 @@ private void createArchiveMain()
             BufferedOutputStream buffered = new BufferedOutputStream( out, 65536 );
             zOut = new ZipArchiveOutputStream( buffered );
 
+            zOut.setCreateUnicodeExtraFields( ZipArchiveOutputStream.UnicodeExtraFieldPolicy.NOT_ENCODEABLE );
             zOut.setEncoding( encoding );
             if ( doCompress )
             {