Update to tk 8.5.19

tests/listbox.test

@@ -2169,6 +2169,45 @@ test listbox-30.1 {Bug 3607326} -setup {
     unset -nocomplain a
 } -result * -match glob -returnCodes error
 
+test listbox-31.1 {<<ListboxSelect>> event} -setup {
+    destroy .l
+    unset -nocomplain res
+} -body {
+    pack [listbox .l -state normal]
+    update
+    bind .l <<ListboxSelect>> {lappend res [%W curselection]}
+    .l insert end a b c
+    focus -force .l
+    event generate .l <1> -x 5 -y 5  ; # <<ListboxSelect>> fires
+    .l configure -state disabled
+    focus -force .l
+    event generate .l <Control-Home> ; # <<ListboxSelect>> does NOT fire
+    .l configure -state normal
+    focus -force .l
+    event generate .l <Control-End>  ; # <<ListboxSelect>> fires
+    .l selection clear 0 end         ; # <<ListboxSelect>> does NOT fire
+    .l selection set 1 1             ; # <<ListboxSelect>> does NOT fire
+    lappend res [.l curselection]
+} -cleanup {
+    destroy .l
+    unset -nocomplain res
+} -result {0 2 1}
+
+test listbox-31.2 {<<ListboxSelect>> event on lost selection} -setup {
+    destroy .l
+} -body {
+    pack [listbox .l -exportselection true]
+    update
+    bind .l <<ListboxSelect>> {lappend res [list [selection own] [%W curselection]]}
+    .l insert end a b c
+    focus -force .l
+    event generate .l <1> -x 5 -y 5  ; # <<ListboxSelect>> fires
+    selection clear                  ; # <<ListboxSelect>> fires again
+    set res
+} -cleanup {
+    destroy .l
+} -result {{.l 0} {{} {}}}
+
 resetGridInfo
 deleteWindows
 option clear