patch 8.0.0257: test file missing in distribution

Problem:    The keyword test file is not included in the archive.
Solution:   Update the list of files.

Author: brammool

Filelist

@@ -45,6 +45,7 @@ SRC_ALL =	\
 		src/hashtab.c \
 		src/json.c \
 		src/json_test.c \
+		src/kword_test.c \
 		src/list.c \
 		src/keymap.h \
 		src/macros.h \

src/version.c

@@ -764,6 +764,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    257,
 /**/
     256,
 /**/