Integrate perl588delta.pod from maint, and re-run pod/buildtoc.

Integrate perl588delta.pod from maint, and re-run pod/buildtoc.

p4raw-id: //depot/perl@27037
p4raw-branched: from //depot/maint-5.8/perl@27036 'branch in'
	pod/perl588delta.pod (@27012..)
p4raw-edited: from //depot/maint-5.8/perl@24695 'edit in'
	vms/descrip_mms.template (@24616..)
p4raw-integrated: from //depot/maint-5.8/perl@24695 'edit in'
	Makefile.SH (@23936..) pod.lst pod/perltoc.pod win32/Makefile
	win32/makefile.mk (@24616..) 'merge in' win32/pod.mak
	(@23573..) MANIFEST (@24611..)