Trailing 0s in split removed.(to_digits changed).

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@4333 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ext/bigdecimal/lib/bigdecimal/util.rb

@@ -38,8 +38,6 @@ class BigDecimal < Numeric
      else
        i       = self.to_i.to_s
        s,f,y,z = self.frac.split
-       f = f.gsub(/0+$/,"")
-       f = "0" if f==""
        i + "." + ("0"*(-z)) + f
      end
   end