Integrate perl587delta.pod, the changes in perlhist.pod, and update

Integrate perl587delta.pod, the changes in perlhist.pod, and update
the relevant makefiles and tables-of-contents to reflect this.

p4raw-id: //depot/perl@24680
p4raw-branched: from //depot/maint-5.8/perl@24679 'branch in'
	pod/perl587delta.pod
p4raw-integrated: from //depot/maint-5.8/perl@24679 'copy in'
	pod/perlhist.pod (@24141..) 'merge in' win32/pod.mak (@23153..)
p4raw-integrated: from //depot/maint-5.8/perl@23573 'edit in' pod.lst
	(@23153..) Makefile.SH (@23406..) pod/perl.pod (@23476..)
	'ignore' pod/perltoc.pod (@23408..) win32/Makefile
	win32/makefile.mk (@23480..) vms/descrip_mms.template
	(@23560..) 'merge in' MANIFEST (@23461..)