Integrate perlio:
Jarkko Hietaniemi [Thu, 6 Jun 2002 12:47:34 +0000 (12:47 +0000)]
[ 17030]
doio.c tweaks
- see SV passed to dup type open "looks_like__number"
- apply layers to pipe opens.
p4raw-link: @17030 on //depot/perlio: 1771866f7afe018493c12f00d922f47bd58a664e

p4raw-id: //depot/perl@17032


Trivial merge