libebook: Preserve predicate-order of sexps
libebook: Preserve predicate-order of sexps

When parsing conjunction and disjunction expressions the predicate order
got reversed, which breaks any optimizations that utilize lazy evaluation
or summary access patterns.

I am pretty sure I've fixed this once already.
No idea how to fix got lost.

tintou/evolution-data-server,matzipan/evolution-data-server,Distrotech/evolution-data-server,Distrotech/evolution-data-server,matzipan/evolution-data-server,Distrotech/evolution-data-server,tintou/evolution-data-server,matzipan/evolution-data-server,Distrotech/evolution-data-server,tintou/evolution-data-server,matzipan/evolution-data-server,matzipan/evolution-data-server,Distrotech/evolution-data-server,tintou/evolution-data-server