Version Control With Subversion Source

Be nice to the svnbook server when running "make bookdiff" for the
Norwegian book. Instead of checking out the src/en/book/ directory from
the server, do a local copy of the directory made by "make engdir".

* src/nb/Makefile
(bookdiff): Don’t check out the whole English "book" directory, run
"make engdir" instead and copy the directory locally.

* src/en/book/appb.xml (Subversion and DeltaV): fix some typos.

* ru/book/appc.xml: The properties have been adjusted.

* ru/book/images/ch01dia1.png: MIME type has been set into 'image/png'.

* ru/book/ch09.xml: The translation of the list of svn switches has been continued.

* src/en/book/ch09.xml: Tix fypo.

Update the Norwegian web page. Merged r1425:1549 from the English page.

* www/index.nb.html
Updated r1549.

* www/index.en.html:

Make it clear that the nightly book-build is for svn 1.2. A number
of folks have been confused.

Started translation of all the <screen> examples in the Norwegian
svnbook.

* src/nb/TRANSLATION-STATUS
Added a new “Translation of examples” section.

* src/nb/book/ch01.xml
* src/nb/book/ch02.xml
* src/nb/book/ch03.xml
Finished.

More proofreading in the Norwegian book.

* src/nb/TRANSLATION-STATUS
ch05.xml to 46%.

* src/nb/nb/book/ch05.xml
Make it nice.