git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@4666 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

Deprecation: easier to work with warning behavior as procs; default behaviors for each environment so users needn't update env.rb; and testing pleasure with assert_deprecated, assert_not_deprecated. Test prints to , dev logs, production ignores.

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@4647 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@4623 5ecf4fe2-1ee6-0310-87b1-e25e094e27de