move the conditional definition of Float#round down
Rails 3 cherry-picks as little as possible from Active Support. In particular the framework requires the files where extensions are exactly defined, rather than convenience entry points like float.rb and friends. Because of that, it is better to define conditionally rather than require conditionally.
|@@ -1 +1 @@|
|-require 'active_support/core_ext/float/rounding' if RUBY_VERSION < '1.9'|