Merge the following from the English version:

1.35 -> 1.37 backups/chapter.sgml
1.30 -> 1.31 basics/chapter.sgml
1.456 -> 1.458 contrib/chapter.sgml
1.60 -> 1.61 eresources/chapter.sgml
1.18 -> 1.19 kernelopts/chapter.sgml
1.21 -> 1.22 policies/chapter.sgml
1.7 -> 1.9 sound/chapter.sgml