[inseparable changes from match from perl-5.003_97f to perl-5.003_97g]

[inseparable changes from match from perl-5.003_97f to perl-5.003_97g]

 CORE LANGUAGE CHANGES

Subject: Improve sysseek(), remove systell(), fix Opcode
From: Chip Salzenberg <chip@perl.com>
Files: doio.c ext/Opcode/Makefile.PL ext/Opcode/Opcode.pm ext/Opcode/Opcode.xs global.sym keywords.pl opcode.pl pod/perldelta.pod pod/perldiag.pod pod/perlfunc.pod pp_sys.c proto.h t/op/sysio.t toke.c

 DOCUMENTATION

Subject: Document {,un}pack changes
Date: Fri, 18 Apr 97 13:49:39 BST
From: Paul Marquess <pmarquess@bfsec.bt.co.uk>
Files: pod/perldelta.pod pod/perldiag.pod
Msg-ID: 9704181249.AA11733@claudius.bfsec.bt.co.uk

    (applied based on p5p patch as commit 7f505e5d2748dc2677688b22967678392a186b16)

 OTHER CORE CHANGES

Subject: SECURITY FIX: 'Identifier too long'
From: Chip Salzenberg <chip@perl.com>
Files: pod/perldelta.pod pod/perldiag.pod toke.c