bsd-family-tree: QCU: ISBN and EAN numbers

ISBN 0201547775 and International Article Number (EAN) 9780201547771 for
'A Quarter Century of UNIX' by Peter H. Salus.

Reviewed by: imp
Pull Request: https://github.com/freebsd/freebsd-src/pull/812

(cherry picked from commit 3dfb39ef1d66e8370c302b158173ed8065887c2a)