Integrate perlio:
Jarkko Hietaniemi [Mon, 6 Nov 2000 20:17:08 +0000 (20:17 +0000)]
[  7574]
Remove debug. Try (Mmap_t) on madvise() call.

p4raw-link: @7574 on //depot/perlio: 4a4a611618e8ff6d5ad41c0e944ec39ce1bd0e52

p4raw-id: //depot/perl@7575


Trivial merge