patch 8.2.0660: the search.c file is a bit big

Problem:    The search.c file is a bit big.
Solution:   Split off the text object code to a separate file. (Yegappan
            Lakshmanan, closes #6007)

src/version.c

@@ -746,6 +746,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    660,
 /**/
     659,
 /**/