* src/en/HACKING: Fix a typo.
Add Stefan Sperling as a committer.
* trunk/src/de/book/ch04-branching-and-merging.xml - Ticket #167 (cf. http://www.svnbook.de/report/6).
* trunk/src/de/book/ch06-server-configuration.xml - Ticket #195 (cf. http://www.svnbook.de/report/6).
* trunk/src/de/book/ch04-branching-and-merging.xml - Ticket #166 (cf. http://www.svnbook.de/report/6).
* trunk/src/de/book/ch04-branching-and-merging.xml - Tickets ##163--165 (cf. http://www.svnbook.de/report/6).
* trunk/src/de/book/ch06-server-configuration.xml - Change SVN to svn.
* trunk/src/de/book/ch06-server-configuration.xml - Typo fixes.
* trunk/src/de/book/ch06-server-configuration.xml - Typo fix.
* trunk/src/de/book/ch06-server-configuration.xml - Ticket #194 (cf. http://www.svnbook.de/report/6).