Added first version of internal I18n support.


git-svn-id: http://sbuild.tototec.de/svn/sbuild/trunk@774 024a02f7-42f7-40fc-9f58-65666d1f2450
Use translations in user-visible strings.


git-svn-id: http://sbuild.tototec.de/svn/sbuild/trunk@775 024a02f7-42f7-40fc-9f58-65666d1f2450
Added target factory for xgettext.


git-svn-id: http://sbuild.tototec.de/svn/sbuild/trunk@776 024a02f7-42f7-40fc-9f58-65666d1f2450