[Citadel Development] Daily commit digest for Citadel

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4c6394e13       Art Cancro      2023-03-05      Release version 974 generated 
by do-release.sh
6e0b96608       Art Cancro      2023-03-05      Be a little less enthusiastic 
about calling abort()
2ca84ffe1       Art Cancro      2023-03-05      Preparing to implement MOVE and 
COPY methods
a387dce56       Art Cancro      2023-03-05      New class "ctdl-fatal-error" 
for big show-stopping banners.