[LyX/master] Handle the case of outdated chkconfig.ltx in user directory

[Pavel Sanda]

On Sun, Apr 21, 2024 at 12:32:38PM +0200, Jürgen Spitzmüller wrote:
> Am Sonntag, dem 21.04.2024 um 12:20 +0200 schrieb Pavel Sanda:
> > Actually I'm not sure I understand the lifecycle of chkconfig.ltx.
> > After renaming to chkconfig.ltx.bak some fresh chkconfig.ltx will be
> > created there or only chkconfig.ltx.bak remains?
> 
> The latter. Let me explain:

...

I see, in that case my concern was unnecessary and there is no
point to distinguish original and new one. I will refrain from
touching the messages.

Pavel