Version Control With Subversion Source

German Book: Make it pass XML validation.

* 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.

Spanish Book: Fix invalid XML and migrate to new Makefile system.

* es/book/book.xml: Fix invalid XML (incorrect path to DTD).
* es/book/ch05.xml: Fix invalid XML (spurious duplicate '.' outside </para>)/
* es/Makefile: Migrate to new system.

Norwegian Book: Fix invalid XML and migrate to new Makefile system.

* nb/book/ch05.xml: Fix invalid XML (misplaced </para>).
* nb/Makefile: Migrate to new system.

Migrate the bulk of the locale-independent Makefile out of the locale-specific
"en" directory, and into "tools".

* tools/Makefile.base: Move en/Makefile here, add comment.
(L10N_REVISION): New make variable, to localize word generated by Makefile.

* en/Makefile: Replace with a simple include of Makefile.base.

Major attack of refactoring on Makefile. Amongst other things, generate the FO
file only once when building both PS and PDF, switch the XML validator to
xmllint, since it is faster and less complex to invoke (and so it should now
work regardless of platform), remove several obfuscating variables, tidy up
overlength lines, and move some more things into the "You may want to
customize these paths" section.

* en/Makefile: Lots!

Book Spanish. Corrected closing filename tag.

Add an XSL transform which produces and outline of the id attributes throughout
the book. Intended as a developer tool.

* tools/make-id-outline.xsl: New file.

Comparing standards throughout the book, in general <simplesect> elements do
not have id attributes, so remove them from the two that do.

* en/book/ch07.xml
* en/book/ch08.xml

Book Spanish. Domingo Suárez Torres provided four translated
paragraphs for the second chapter.

Book Spanish. Translated 42 paragraphs.