Paperclip Override for Jruby 1.7.4 Windows Issue

gistfile1.rb

#place this overide in a rails initailizer as a workaround

module Paperclip
  class ContentTypeDetector
    def type_from_file_command
      type = SENSIBLE_DEFAULT
      type.split(/[:;\s]+/)[0]
    end
  end  
end

From what I can gather, paperclip is runnning the "file" command to identify a file type.
Windows has no such "file" command. Unfortunatly, there is a Jruby 1.7.4 issue with the "current thread" variable which prevents the type_from_file_command from failing gracefully. Here is a work around

@hathawad have you confirmed this is fixed on master for 1.7.5 yet? We did change the logic of this so that we no longer have the current thread issue. I just want to make sure so we can make sure this is addressed for 1.7.5.