patch 8.2.4664: Elvish files are not recognized

Problem:    Elvish files are not recognized.
Solution:   Recognize .elv files. (Bruno Roque, closes #10058)
diff --git a/src/version.c b/src/version.c
index 72ba02c..bb5fc9d 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4664,
+/**/
     4663,
 /**/
     4662,