MFde: Update the German Documentation set.

This update brings the latest version of the FAQ, the explaining-bsd
article, three chapters from the developers handbook (secure programming,
kernel debugging, and tools), as well as two chapters from the handbook
(eressources, kernel configuration, and worldwide mirrors).

de_DE.ISO8859-1/articles/explaining-bsd/article.sgml 1.22 -> 1.24
de_DE.ISO8859-1/books/developers-handbook/kerneldebug/chapter.sgml 1.74 -> 1.78
de_DE.ISO8859-1/books/developers-handbook/secure/chapter.sgml 1.27 -> 1.30
de_DE.ISO8859-1/books/developers-handbook/tools/chapter.sgml 1.47 -> 1.50
de_DE.ISO8859-1/books/faq/book.sgml 1.1115 -> 1.1116
de_DE.ISO8859-1/books/handbook/eresources/chapter.sgml 1.195 -> 1.199
de_DE.ISO8859-1/books/handbook/kernelconfig/chapter.sgml 1.184 -> 1.192
de_DE.ISO8859-1/books/handbook/mirrors/chapter.sgml 1.451 -> 1.464

Obtained from: The FreeBSD German Documentation Project
Approved by: jkois (mentor)