patch 8.0.0252: not properly recognizing word characters between 128 and 255

Problem:    Characters below 256 that are not one byte are not always
            recognized as word characters.
Solution:   Make vim_iswordc() and vim_iswordp() work the same way. Add a test
            for this. (Ozaki Kiichi)
diff --git a/src/version.c b/src/version.c
index 3818647..8645713 100644
--- a/src/version.c
+++ b/src/version.c
@@ -765,6 +765,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    252,
+/**/
     251,
 /**/
     250,