Integrate perlio:
Jarkko Hietaniemi [Thu, 10 Jan 2002 17:48:42 +0000 (17:48 +0000)]
[ 14167]
More signal hackery

p4raw-link: @14167 on //depot/perlio: c843839fe3793388103a32dc99c4be8c19237088

p4raw-id: //depot/perl@14170


Trivial merge