p4raw-id: //depot/perl@4692
<F<A.Koenig@franz.ww.TU-Berlin.DE>>, Tim Bunce <F<Tim.Bunce@ig.co.uk>>. VMS
support by Charles Bailey <F<bailey@newman.upenn.edu>>. OS/2 support by
Ilya Zakharevich <F<ilya@math.ohio-state.edu>>. Mac support by Paul Schinder
-<F<schinder@pobox.com>>.
+<F<schinder@pobox.com>>. abs2rel() and rel2abs() written by
+Shigio Yamaguchi <F<shigio@tamacom.com>>, modified by Barrie Slaymaker
+<F<barries@slaysys.com>>. splitpath(), splitdir(), catpath() and catdir()
+by Barrie Slaymaker.