patch 8.1.2265: when popup with "botleft" does not fit it flips incorrectly

Problem:    When popup with "botleft" does not fit it flips incorrectly.
Solution:   Only flip when there is more space on the other side.  Add the
            "posinvert" option to disable flipping and do it in both
            directions if enabled.  (closes #5151)
diff --git a/src/version.c b/src/version.c
index 8dcefd4..73a0c1f 100644
--- a/src/version.c
+++ b/src/version.c
@@ -742,6 +742,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2265,
+/**/
     2264,
 /**/
     2263,