patch 8.2.3474: some places use "Vimscript" instead of "Vim script"

Problem:    Some places use "Vimscript" instead of "Vim script".
Solution:   Consistently use "Vim script". (Hirohito Higashi, closes #8910)

src/getchar.c

@@ -2182,7 +2182,7 @@ f_getcharmod(typval_T *argvars UNUSED, typval_T *rettv)
 /*
  * Process messages that have been queued for netbeans or clientserver.
  * Also check if any jobs have ended.
- * These functions can call arbitrary vimscript and should only be called when
+ * These functions can call arbitrary Vim script and should only be called when
  * it is safe to do so.
  */
     void

src/if_lua.c

@@ -1853,7 +1853,7 @@ luaV_setvar(lua_State *L)
 	// Update the key
 	typval_T	tv;
 
-	// Convert the lua value to a vimscript type in the temporary variable
+	// Convert the lua value to a Vim script type in the temporary variable
 	lua_pushvalue(L, 4);
 	if (luaV_totypval(L, -1, &tv) == FAIL)
 	    return luaL_error(L, "Couldn't convert lua value");

src/version.c

@@ -757,6 +757,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    3474,
 /**/
     3473,
 /**/