encodings.pl: Added `ASCII' alias.

encodings.pl: Added `ASCII' alias.

	* scripts/encodings.pl: Added `ASCII' alias.
	* Makefile.in: Rebuilt.
	* Makefile.am (convert_source_files): Added new files.
	* gnu/gcj/convert/Input_ASCII.java: New file.
	* gnu/gcj/convert/Output_ASCII.java: New file.
	* gnu/gcj/convert/Output_8859_1.java (write): Use `?' to represent
	out-of-range characters.
	* gnu/gcj/convert/natIconv.cc (iconv_init): New method.
	(read): Swap bytes if required.  Treat `count' as character count,
	not byte count.
	(write): Likewise.  Also, handle case where iconv fails on a given
	character.
	(init): Put encoding into exception.
	* gnu/gcj/convert/IOConverter.java (iconv_byte_swap): New global.
	(static): Call iconv_init.  Rebuilt alias list.
	(iconv_init): New private method.

From-SVN: r37190