integrate cfgperl changes#6242..6249 into mainline

integrate cfgperl changes#6242..6249 into mainline

p4raw-link: @6249 on //depot/cfgperl: cab27d238e930b8cddb5b1fb3260355f913b86a6
p4raw-link: @6242 on //depot/cfgperl: 1e72252ad7b8e23d1a1142285b8aa82986bd2491

p4raw-id: //depot/perl@6359
p4raw-integrated: from //depot/cfgperl@6358 'copy in'
	ext/DynaLoader/DynaLoader_pm.PL (@5953..) t/lib/peek.t
	(@6086..) t/lib/filefunc.t t/lib/filespec.t (@6230..)
	pod/perlintern.pod (@6237..) pod/perlapi.pod utf8.c (@6242..)
p4raw-integrated: from //depot/cfgperl@6249 'copy in' lib/IPC/Open3.pm
	(@5937..)
p4raw-integrated: from //depot/cfgperl@6248 'copy in' pod/perlfunc.pod
	(@6206..)
p4raw-integrated: from //depot/cfgperl@6247 'ignore' lib/File/Spec.pm
	(@6230..)
p4raw-integrated: from //depot/cfgperl@6244 'copy in' gv.c (@6217..)
	'merge in' sv.c (@6196..)
p4raw-integrated: from //depot/cfgperl@6243 'copy in' pp_proto.h
	(@6237..) 'ignore' embedvar.h perlapi.h (@6237..) 'merge in'
	embed.h objXSUB.h (@6237..) embed.pl perlapi.c proto.h
	(@6242..)