BytesToUnicode.java (getDefaultDecoder): Let default decoder use iconv.

* gnu/gcj/convert/BytesToUnicode.java (getDefaultDecoder): Let
	default decoder use iconv.
	* gnu/gcj/convert/UnicodeToBytes.java (getDefaultEncoder):
	Let default encoder use iconv.
	* configure: Rebuilt.
	* configure.in: Check for nl_langinfo and <langinfo.h>.
	* java/lang/natSystem.cc (file_encoding): New function.
	(DEFAULT_FILE_ENCODING): Define to file_encoding() if possible.

From-SVN: r36306

libjava/gnu/gcj/convert/BytesToUnicode.java

@@ -52,7 +52,14 @@ public abstract class BytesToUnicode extends IOConverter
       }
     catch (Throwable ex)
       {
-	return new Input_8859_1();
+	try
+	  {
+	    return new Input_iconv (System.getProperty ("file.encoding"));
+	  }
+	catch (Throwable ex2)
+	  {
+	    return new Input_8859_1();
+	  }
       }
   }