jannet: Fix update and diff for git-versioned projects

scripts/jannet

@@ -105,6 +105,28 @@ cmd_rpmnew()
 	done
 }
 
+cmd_diff()
+{
+	local file
+
+	list_all_packages |
+	xargs rpm -qV |
+	sed '/^....L\|^..5/ !d; s%[^/]*/%/%' |
+	while read file; do
+		if diff -q $file $file.rpmnew; then
+			if [ -L "$file" ]; then
+				echo ========== skipping link $file
+				diff $file.rpmnew $file
+				continue
+			fi
+			echo mv $file.rpmnew $file
+			sudo mv $file.rpmnew $file
+		else
+			echo =========== $file
+			diff $file.rpmnew $file
+		fi
+	done
+}
 
 cmd="$1"
 shift
@@ -168,6 +190,9 @@ cpp-glib)
 rpmnew)
 	cmd_rpmnew $@
 	;;
+diff)
+	cmd_diff $@
+	;;
 help)
 	usage 0
 	;;