[PATCH] Improved support for shortcut options to custom validators

Because of the current implementation of _parse_validates_options, you can only "shortcut" options with arrays, ranges and regexes. This patch expands that feature to so that you can also send other types of objects including strings and numbers. They will be passed to the custom validator's initializer as options[:with], just like happens with regexes now.

# current functionality
validates :email, :format => /@/
validates :gender, :inclusion => %w(male female)
validates :password, :length => 6..20

# new functionality in this patch
validates :name, :like => "Report"
validates :number, :base => 10