* 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