MFS: Synchronize RELENG_4_8 de_DE release documentation with
RELENG_4 de_DE release documentation.

errata/article.sgml 1.1.2.11->1.1.2.12
hardware/alpha/proc.sgml 1.1.2.10->1.1.2.11
hardware/common/dev.sgml 1.1.2.10->1.1.2.12
installation/common/install.sgml 1.1.2.5->1.1.2.6
relnotes/common/new.sgml 1.1.2.19->1.1.2.21

Approved by: re, alex