dcrochu as of 18/04/2024 plus rsigns

LRT corrections by dcrochu.

List of RR/ linked by the use of 8th mode formulas with disputed flat Sis in the Cento 8Omega (cf https://wiki.omnigreg.at/cento_rp:cent_8o ) : A3N3R2 (low prep variant on populorum, high prep variant on gloriosum), Q3N2R3 (low prep variant on carcere), Q5N1R2 (high prep variant on deus meus), COPON1R3 (high prep variant on poenitebit eum)