Alpha Testing for 7T Diffusion Preprocessing

• Added step to PostEddy phase of Diffusion Preprocessing to copy some eddy log files from where they are generated by the eddy process to where they are desired to be in the packaged data.
• To accomplish this file copying for 3T subject data that has already been processed a separate "patch" pipeline was created, but future runs of 3T Diffusion Preprocessing should use this version so that they do not require a run of the patch pipeline.