As always, there's more than one way to do it. Also, it depends on which features you need, and whether you would be able to change a bit of your setup.

• You could just build a new package containing your own CharName.pm and install it. Strawberry Perl contains all the tools you need. I don't know why your PERL5LIB has a different ordering of the vendor and site paths than usual - you might need to reverse that.
• You could also check whether the core module charnames fulfills your needs. It is as up-to-date as your Perl version: Unicode version 5.1 came with Perl 5.8.9. It provides character names with the charnames::viacode function but no equivalent to the ublock.