Changed the config_file input under FNIRT Inputspec to take in a String instead of an Enum type. This way a custom FSL FNIRT config file can be used.
Merge branch 'master' of https://github.com/nipy/nipype into nipy-master

Conflicts:
	nipype/interfaces/fsl/preprocess.py
add mri_surf2vol wrap
added identity input to Surface2VolTransform
New interface for Camino dtshape. Minor correction to Camino ComputeEigensystem
Correct PEP8
3DROIstats fix
fixed tests
added missing test
wrong path
fixed list outputs
Fixed template for -o argument of fsl_glm
Removed the extension
Merge https://github.com/stymy/nipype

Conflicts:
	nipype/interfaces/afni/preprocess.py
fixed pull request issues:
wrapping Surface2VolTransform,
-moved from preprocess.py to utils.py
-improved input descriptions
-renamed output suffix
fixed errors from DOCTEST, now OK.
Merge remote-tracking branch 'upstream/master' into camino
Add header option for camino.dti.DTMetric
Merge pull request #2 from nipy/master

Update nipype fork.
Fixed the " AttributeError: 'Refit' object has no attribute 'outputs' " error.