* de/Makefile: New - trivially includes Makefile.base.
* de/book/foreword.xml:
* de/book/ch00.xml:
* de/book/ch01.xml:
* de/book/ch02.xml:
* de/book/ch07.xml:
* de/book/ch08.xml:
* de/book/ch09.xml:
Add an XML declaration stating the encoding, and fix numerous small markup
bugs.
* de/book/book.xml:
Merge renaming of © entity to &license; (to avoid clash with standard
HTML entity. Comment out entities for files which do not exist because they
have not been translated. Add a dummy chapter to declare IDs for things
pointed to by IDREFs, but which do not exist in the translation yet.
