porting/customized.t, pod_rules.t: treat crlf as lf when checking files

Doing a default clone of perl on Win32 checks files out with CRLF
line separators, which made the customized file digests mismatch
those in customized.dat, and parsing fail for pod_rules.t

Ignore CRLF on Win32 when creating the digests and when reading in
files for parsing.

Porting/pod_lib.pl

@@ -133,6 +133,7 @@ sub slurp_or_die {
     my $filename = shift;
     my $fh = open_or_die($filename);
     binmode $fh;
+    binmode $fh, ":crlf" if $^O eq "MSWin32";
     local $/;
     my $contents = <$fh>;
     die "Can't read $filename: $!" unless defined $contents and close $fh;

t/porting/customized.t

@@ -103,6 +103,7 @@ foreach my $module ( sort keys %Modules ) {
     {
       open my $fh, '<', $file or die "Can't open $file";
       binmode $fh;
+      binmode $fh, ":crlf" if $^O eq "MSWin32";
       $digest->addfile( $fh );
       close $fh;
     }