Don't encode text

This does also mean that we have to set STDOUT in binary mode so a sentence with e.g. Japanese characters cannot give the message:
```
Wide character in print at /usr/lib/perl5/site_perl/5.26.1/Doxygen/Filter/Perl.pm line 583
```

Author: albert-github

lib/Doxygen/Filter/Perl.pm

@@ -381,6 +381,8 @@ sub PrintAll
     my $logger = $self->GetLogger($self);
     $logger->debug("### Entering PrintAll ###");
 
+    binmode STDOUT, ":utf8";
+
     $self->_PrintFilenameBlock();
     $self->_PrintIncludesBlock();