MFde: Update the german handbook.

Update some chapters of the handbook to the latest version.

books/handbook/config/chapter.sgml 1.238 -> 1.239
books/handbook/cutting-edge/chapter.sgml 1.227 -> 1.245
books/handbook/printing/chapter.sgml 1.109 -> 1.121
books/handbook/virtualization/chapter.sgml 1.20 -> 1.21

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