Work around bogosity in autoconf-2.62: it breaks #undef's that have a
comment after them, a construct that has worked fine in every previous
autoconf release.  See bz #449471 and bz #449245.


diff -Naur jpeg-6b.orig/jconfig.cfg jpeg-6b/jconfig.cfg
--- jpeg-6b.orig/jconfig.cfg	1994-12-06 11:43:15.000000000 -0500
+++ jpeg-6b/jconfig.cfg	2008-05-31 16:59:32.000000000 -0400
@@ -28,11 +28,16 @@
 
 #ifdef JPEG_CJPEG_DJPEG
 
-#define BMP_SUPPORTED		/* BMP image file format */
-#define GIF_SUPPORTED		/* GIF image file format */
-#define PPM_SUPPORTED		/* PBMPLUS PPM/PGM image file format */
-#undef RLE_SUPPORTED		/* Utah RLE image file format */
-#define TARGA_SUPPORTED		/* Targa image file format */
+/* BMP image file format */
+#define BMP_SUPPORTED
+/* GIF image file format */
+#define GIF_SUPPORTED
+/* PBMPLUS PPM/PGM image file format */
+#define PPM_SUPPORTED
+/* Utah RLE image file format */
+#undef RLE_SUPPORTED
+/* Targa image file format */
+#define TARGA_SUPPORTED
 
 #undef TWO_FILE_COMMANDLINE
 #undef NEED_SIGNAL_CATCHER