- new applet diff. Rob Sullivan writes:

Here's my attempt at a mini diff applet - it's adapted from the code at
http://www.openbsd.org/cgi-bin/cvsweb/src/usr.bin/diff/, and only supports
unified diffs.

I've busyboxified everything to a reasonable degree, so I think the code is
suitable enough to be included, but there's still a fair bit of cleaning up
to be done.

coreutils/Makefile.in

@@ -25,6 +25,7 @@ COREUTILS-$(CONFIG_CUT)       += cut.o
 COREUTILS-$(CONFIG_DATE)      += date.o
 COREUTILS-$(CONFIG_DD)        += dd.o
 COREUTILS-$(CONFIG_DF)        += df.o
+COREUTILS-$(CONFIG_DIFF)      += diff.o
 COREUTILS-$(CONFIG_DIRNAME)   += dirname.o
 COREUTILS-$(CONFIG_DOS2UNIX)  += dos2unix.o
 COREUTILS-$(CONFIG_DU)        += du.o