Log Message:
Update to 1.48:

11-Aug-2009
	diffstat 1.48

	add decompression tests for lzma and pack file types.

	check for zcat and uncompress in preference to "compress -dc".

	modify to check the first few bytes of standard input, and use a
	corresponding decompression utility if the stream appears to be
	compressed.  This requires making a temporary copy of the data
	(Debian #491575).

	add -N option, to truncate filenames.

	use getc_unlocked() rather than fgetc_unlocked()

	modify to recognize Perforce-style diffs (patch by Ed Schouten).

	update configure macros to improve compiler warning checks, use
	$PATH_SEPARATOR rather than $PATH_SEP (for consistency with some
	autoconf versions),

	fix typo in configure --with-install-prefix option (report by
	Dagobert Michelsen).

	update config.guess, config.sub

29-Mar-2009
	diffstat 1.47

	modify to work with patch ".rej" files, which do not have a header to
	tell which file is affected.

	fix typo in usage message (reports by Moritz Barsnick, John McNamara,
	Richard Quadling).