[LyX features/breakrows] Workaround for Qt 4

[Jean-Marc Lasgouttes]

Le 31/08/2021 à 10:56, Kornel Benko a écrit :
> Compiles without warnings (ubuntu 19.3)

Thanks. Does not work well though. I have a list of things to fix (and 
improve) and will communicate again when the branch is useful. But you 
testing is appreciated :)

JMarc