bug#68765: 30.0.50; Adding window-tool-bar package.

[Juri Linkov]

>> I think after these patches are applied, the remaining work to resolve this
>> would be having the ELPA package added and me updating NEWS and the manual.
>> I can start on the updates.
>
> Thanks, the changes in tab-line.el look nice.

Oh, for some reason now a lot of messages are displayed while restoring
the desktop where tab-line-mode is saved for every buffer:

tab-line-format set outside of tab-line-mode, currently ‘(:eval 
(tab-line-format))’
...
tab-line-format set outside of tab-line-mode, currently ‘(:eval 
(tab-line-format))’ [2 times]
...
tab-line-format set outside of tab-line-mode, currently ‘(:eval 
(tab-line-format))’
...
tab-line-format set outside of tab-line-mode, currently ‘(:eval 
(tab-line-format))’ [8 times]
...
tab-line-format set outside of tab-line-mode, currently ‘(:eval 
(tab-line-format))’ [35 times]