The difference has been validated with diffpdf.
The following could not be tested and were left unchanged:
docbook_article.lyx
lilypond.lyx
linguistics.lyx
springer/sv*.lyx
de/linguistics.lyx
es/linguistics.lyx
ja/FeynmanDiagrams.lyx
ja/lilypond.lyx
ja/beamer.lyx
ja/xypic.lyx
The following is the script that I used (in lib/examples):
LYX=../../build/src/lyx
$LYX -E pdf2 $1.old.pdf $1
sed -i "s/^\\\\begin_inset Separator parbreak$/\\\\begin_inset Separator plain/" $1
sed -i "/^\\\\begin_inset Separator latexpar$/ { N; d; }" $1
$LYX -e lyx $1
$LYX -E pdf2 $1.pdf $1
diffpdf $1.old.pdf $1.pdf
