Support additional scaling factors when decompressing

git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@753 632fc199-4ca6-4c93-a231-07263d6284db

djpeg.1

@@ -1,4 +1,4 @@
-.TH DJPEG 1 "11 October 2010"
+.TH DJPEG 1 "27 January 2012"
 .SH NAME
 djpeg \- decompress a JPEG file to an image file
 .SH SYNOPSIS
@@ -62,8 +62,9 @@ runs noticeably faster in this mode.
 .TP
 .BI \-scale " M/N"
 Scale the output image by a factor M/N.  Currently the scale factor must be
-1/1, 1/2, 1/4, or 1/8.  Scaling is handy if the image is larger than your
-screen; also,
+M/8, where M is an integer between 1 and 16 inclusive, or any reduced fraction
+thereof (such as 1/2, 3/4, etc.)  Scaling is handy if the image is larger than
+your screen; also,
 .B djpeg
 runs much faster when scaling down the output.
 .TP