fix tbss_non_FA to match FSL's tbss_non_FA command

[psharp1289]

Here is the FSL command from their source code:
"${FSLDIR}/bin/tbss_skeleton -i mean_FA -p $thresh mean_FA_skeleton_mask_dst ${FSLDIR}/data/standard/LowerCingulum_1mm all_FA all_${ALTIM}skeletonised -a all$ALTIM"
where all_${ALTIM} in my example is all_RD. notice all_FA is in the placeholder for the 4d Data file under the -p option, and the -a all_RD is there too.
here is what I changed in tbss.py to allow for this:
see new inputnode, all_FA_file and
see (maskgroup, projectfa, [('out_file', 'alt_data_file')]) step in tbss_non_fa.connect command. This is to get the -a option with the all_RD file.

[satra]

@psharp1289 - could you please merge with upstream and add an updated CHANGES file?

[psharp1289]

Sure I will try to do this (again I'm new to GitHub).

Paul

On Tue, Feb 10, 2015 at 12:39 PM, Satrajit Ghosh notifications@github.com
wrote:

@psharp1289 https://github.com/psharp1289 - could you please merge with
upstream and add an updated CHANGES file?

—
Reply to this email directly or view it on GitHub
#1033 (comment).

Paul B. Sharp
PhD Candidate, University of Illinois Urbana Champaign
http://psharp1289.wix.com/paulbsharp

[psharp1289]

I think I did it correctly this time. I went to my local branch called
"patch-1" and update the CHANGES file. Anything else I need to do?

Paul

On Tue, Feb 10, 2015 at 12:39 PM, Satrajit Ghosh notifications@github.com
wrote:

@psharp1289 https://github.com/psharp1289 - could you please merge with
upstream and add an updated CHANGES file?

—
Reply to this email directly or view it on GitHub
#1033 (comment).

Paul B. Sharp
PhD Candidate, University of Illinois Urbana Champaign
http://psharp1289.wix.com/paulbsharp

[satra]

@psharp1289 - could you copy in the latest CHANGES file (from master) and then add your change, that will help with the merge.

[psharp1289]

Ok. My CHANGES file should be identical to the master branch with my addition at the top of the file under "patch-1" branch.

Thanks for the continued assistance.

Paul