Fix-ups to previous cherry-pick

(For blead this was done in b039475.)

Author: steve-m-hay

pod/perl.pod

@@ -181,6 +181,7 @@ aux h2ph h2xs perlbug pl2pm pod2html pod2man splain xsubpp
 
     perlhist		Perl history records
     perldelta		Perl changes since previous version
+    perl5280delta	Perl changes in version 5.28.0
     perl5262delta	Perl changes in version 5.26.2
     perl5261delta	Perl changes in version 5.26.1
     perl5260delta	Perl changes in version 5.26.0

win32/pod.mak

@@ -53,6 +53,7 @@ POD = perl.pod	\
 	perl5260delta.pod	\
 	perl5261delta.pod	\
 	perl5262delta.pod	\
+	perl5280delta.pod	\
 	perl5281delta.pod	\
 	perl561delta.pod	\
 	perl56delta.pod	\
@@ -202,6 +203,7 @@ MAN = perl.man	\
 	perl5260delta.man	\
 	perl5261delta.man	\
 	perl5262delta.man	\
+	perl5280delta.man	\
 	perl5281delta.man	\
 	perl561delta.man	\
 	perl56delta.man	\
@@ -351,6 +353,7 @@ HTML = perl.html	\
 	perl5260delta.html	\
 	perl5261delta.html	\
 	perl5262delta.html	\
+	perl5280delta.html	\
 	perl5281delta.html	\
 	perl561delta.html	\
 	perl56delta.html	\
@@ -500,6 +503,7 @@ TEX = perl.tex	\
 	perl5260delta.tex	\
 	perl5261delta.tex	\
 	perl5262delta.tex	\
+	perl5280delta.tex	\
 	perl5281delta.tex	\
 	perl561delta.tex	\
 	perl56delta.tex	\