patch 8.0.1327: new proto file missing from distribution

Problem:    New proto file missing from distribution.
Solution:   Add it. (closes #2355)
diff --git a/Filelist b/Filelist
index 082efd7..9328943 100644
--- a/Filelist
+++ b/Filelist
@@ -141,6 +141,7 @@
 		src/testdir/xterm_ramp.vim \
 		src/proto.h \
 		src/proto/arabic.pro \
+		src/proto/beval.pro \
 		src/proto/blowfish.pro \
 		src/proto/buffer.pro \
 		src/proto/channel.pro \