Integrate perlio:
Jarkko Hietaniemi [Wed, 8 May 2002 13:59:16 +0000 (13:59 +0000)]
[ 16487]
Avoid pointless re-encode of data in :encoding's read buffer
on a close
p4raw-link: @16487 on //depot/perlio: b4bd11bcb2b7a82b45aa02185638dd82ec8532ae

p4raw-id: //depot/perl@16491


Trivial merge