o Add new translations and enable them in book.sgml:
(new) -> 1.5 boot/chapter.sgml
(new) -> 1.1 users/chapter.sgml
Note: Remove FreeBSD's bootstrap section from internals/chapter.sgml.
o Merge the following from the English version:
1.5 -> 1.8 chapters.ent
Submitted by: Hiroki Sato <hrs@geocities.co.jp>