patch 9.1.1009: diff feature can be improved

Problem:  diff feature can be improved
Solution: include the linematch diff alignment algorithm
          (Jonathon)

closes: #9661

Signed-off-by: Jonathon <jonathonwhite@protonmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/Filelist b/Filelist
index 0a1d993..aefed89 100644
--- a/Filelist
+++ b/Filelist
@@ -52,6 +52,7 @@
 		src/debugger.c \
 		src/dict.c \
 		src/diff.c \
+		src/linematch.c \
 		src/digraph.c \
 		src/drawline.c \
 		src/drawscreen.c \
@@ -286,6 +287,7 @@
 		src/proto/insexpand.pro \
 		src/proto/job.pro \
 		src/proto/json.pro \
+		src/proto/linematch.pro \
 		src/proto/list.pro \
 		src/proto/locale.pro \
 		src/proto/logfile.pro \