updated for version 7.3.456
Problem:    ":tab drop file" has several problems, including moving the
            current window and opening a new tab for a file that already has a
            window.
Solution:   Refactor ":tab drop" handling. (Hirohito Higashi)
diff --git a/src/testdir/test62.ok b/src/testdir/test62.ok
index 9a51e44..7625cd2 100644
--- a/src/testdir/test62.ok
+++ b/src/testdir/test62.ok
@@ -5,3 +5,6 @@
 this is tab page 4
 gettabvar: pass
 settabvar: pass
+tab drop 1: pass
+tab drop 2: pass
+tab drop 3: pass