MFbed: Update the German documentation set.

books/faq/book.sgml 1.779 -> 1.780
books/fdp-primer/sgml-markup/chapter.sgml 1.73 -> 1.74
books/handbook/Makefile 1.97 -> 1.98
books/handbook/disks/chapter.sgml 1.256 -> 1.257
books/handbook/introduction/chapter.sgml 1.113 -> 1.114
books/handbook/linuxemu/chapter.sgml 1.129 -> 1.130
books/handbook/mirrors/chapter.sgml 1.412 -> 1.416
books/handbook/ports/chapter.sgml 1.253 -> 1.256
books/handbook/security/chapter.sgml 1.292 -> 1.293

Obtained from: The FreeBSD German Documentation Project.