Merge the following from the English version:
1.146 -> 1.149 authors.ent
1.377 -> 1.382 contrib/chapter.sgml
1.51 -> 1.58 pgpkeys/chapter.sgml
1.197 -> 1.200 staff/chapter.sgml
Submitted by: Shun SUZUKI <si006@ccm.gs.niigata-u.ac.jp>, hrs
References: [doc-jp 8030]