Update bank files - Fixes #1

This pull request updates the bank files to mirror the files in the original implementation (http://cpansearch.perl.org/src/SBURKE/Text-Unidecode-0.04/lib/Text/Unidecode/)
there should be a single backslash in the output for these (so ``\\`` in the code, not ``\\\\``. when using ``qq{\\}`` in PErle, there is a single backslash in the string (the other one is escaping as well). this impacts other lines of the file too