Version Control With Subversion Source

* src/de/book/ch02-basic-usage.xml
- integrated patch of Jens. M. Felderhoff
for ticket #63

* ch04: Clarify that after a --reintegrate, a branch is useless and should be destroyed/recreated.

Sync the Norwegian and English book: "make sync HEAD=2656".

* src/nb/book/ch-advanced-topics.xml
* src/nb/book/ch-branching-and-merging.xml
* src/nb/book/ch-customizing-svn.xml
* src/nb/book/ch-server-configuration.xml
* src/nb/LAST_SYNC
* src/nb/TRANSLATION-STATUS
Merged, resolved and updated r2653, r2654, r2655, r2656.

Sync the Norwegian and English book: "make sync HEAD=2652".

* src/nb/book/ch-server-configuration.xml
* src/nb/LAST_SYNC
* src/nb/TRANSLATION-STATUS
Merged and resolved r2652.

Sync the Norwegian and English book: "make sync HEAD=2631".

* src/nb/book/ch-server-configuration.xml
* src/nb/book/foreword.xml
* src/nb/LAST_SYNC
* src/nb/TRANSLATION-STATUS
Merged and updated r2630, r2631.

Sync the Norwegian and English book up to r2629.

* src/nb/book/ch-server-configuration.xml
Merged and updated r2628, r2629.

* src/nb/LAST_SYNC
Updated by "make sync HEAD=2629".

* src/nb/TRANSLATION-STATUS
Updated by "make status". Do I really have to write this every time?
Oh well.

Sync the Norwegian and English book up to r2625.

* src/nb/book/ch-reference.xml
* src/nb/book/ch-advanced-topics.xml
Merged and updated r2614, r2615, r2616, r2617, r2618, r2623, r2625.

* src/nb/LAST_SYNC
Updated by "make sync HEAD=2625".

* src/nb/TRANSLATION-STATUS
Updated by "make status".

Sync the Norwegian and English book up to r2613.

* src/nb/book/ch-advanced-topics.xml
Merged r2613.

* src/nb/LAST_SYNC
Updated by "make sync HEAD=2613".

* src/nb/TRANSLATION-STATUS
Updated by "make sync".

Some Linux variants (Ubuntu, at least) symlinks /bin/dash instead of
/bin/bash to /bin/sh, which breaks the Makefile. The shell command
"read" needs a variable name in such cases.

* src/nb/Makefile
(bookdiff, sync): Replace "echo -n" commands with "read -p" and add a
dummy variable.

* src/de/book/ch00-preface.xml
* src/de/book/ch01-fundamental-concepts.xml
* src/de/book/ch02-basic-usage.xml
- Fixes by Jens. M. Felderhoff
for different errors during my patching.