Working towards a 4.6.0 release

Perhaps we should make a short summary of what still has to be done
before we can release 4.6.0.

*) The mime-type association seems essentially solver by Byrial,and it is just
    a matter of doing it now.
*) The bad bug with the black clock I was wrestling with before my holiday 
is now solved.
*) I just pushed a patch to hgm.nubati that attempts to fix the --> bug 
#34987; perhaps
    someone can test if I got the right pattern to pre-empt the shout 
detection.
*) The problem with the width of the menu bar seems to be ameliorated by 
the latest
    patch on this enough to be acceptable. I am sure we could continue to 
improve it
    almost indefinitely, but I don't want to uphold the release for that 
indefinitely.
*) I pushed a patch to reassign Ctrl+. to <Enter>. If everyone agrees with 
that, we are
    done with this bug (#3500) as far as I am concerned. But perhaps I 
should add this
    functionality to WinBoard to?
*) I think switching back from mono-mode (bug #34990) is satisfactorily 
fixed by my patch
    in hgm.nubati. I don't think it is necessary to automatically switch 
back what was
    forced by necessity when the necessity disappears; there are many other 
places in
    XBoard where options affect each other, and we don't do it there either.
*) I still have to take a closer look to what exactly the status of this 
20-sec startup delay
    currently is.
*) We should still have a look at optimization level of some time-critical 
pieces of code
    used in loading huge PGN files (in particular moves.c and parser.c).

Any more loose ends?