MFC r313867, r313869-r313870

r313867:
Add history and Authors section in the manpage

Submitted by: dteske
MFC after: 2 days
Differential Revision: https://reviews.freebsd.org/D9419

r313869:
Also add vsevolod@ in the authors

r313870:
Use full name for the month

Reported by: brueffer