Comment 0 for bug 1025341

Contractor should support manipulating not only files but also text buffers passed to it. Contractor core is able to handle that. We still need to:
 1) Establish a mimetype for text buffer as opposed to text file
 2) Adjust contracts accordingly
 3)* Ensure that passing text buffers instead of filenames works for fairly large buffers (e.g. 100Mb)

* probably not for Luna