Make stdout and stderr utf8

assigned to @boklm

This seems to fix the issue:

diff --git a/rbm b/rbm
index c99de28..a2dd36f 100755
--- a/rbm
+++ b/rbm
@@ -90,6 +90,8 @@ sub set_options {
 sub show_conf {
     shift;
     my $args = set_options(@_);
+    binmode(STDOUT, ":utf8");
+    binmode(STDERR, ":utf8");
     if (@$args == 0) {
         print YAML::XS::Dump($RBM::config);
         return;

Adding the line use open OUT => ':locale'; seems to fix the issue too, and is setting output encoding based on locale environment variables, according to https://perldoc.perl.org/open.

diff --git a/rbm b/rbm
index c99de28..de6e083 100755
--- a/rbm
+++ b/rbm
@@ -1,6 +1,7 @@
 #!/usr/bin/perl -w

 use strict;
+use open OUT => ':locale';
 use File::Basename;
 use lib dirname($0) . '/lib';
 use RBM;