* ext/bigdecimal/bigdecimal.c (BigDecimal_div2): The signature was
  changed to allow us to pass arguments directly.

* ext/bigdecimal/bigdecimal.c (BigDecimal_div3): Added for the role of
  the old BigDecimal_div2.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43815 b2dd03c8-39d4-4d8f-98ff-823fe69b080e