Log Message:
rhash: updated to 1.3.8

RHash v1.3.8
rename Windows encoding options: --ansi to --win, --oem to --dos
support GOST R 34.11-2012 hash function (options: --gost12-256, --gost12-512)
changed the short option `-G' to be alias of --gost12-256
changed printf format token `%g' to be alias of %{gost12-256}