fix TRZ file reader on big-endian architectures

[rathann]

Fixes #1424 .

Changes made in this Pull Request:

• all ints and floats should be read as little-endian from TRZ files

PR Checklist

• Tests?
• Docs?
• CHANGELOG updated?
• Issue raised/referenced?

[kain88-de]

@rathann your git history seems to be a bit confused. Do you mind cleanint it up. It seems to be that you only want to add the last commit. I recommend to use feature branches in your own repository to keep these things from happening.

[rathann]

@kain88-de Yes, sorry. I'll try, though I'm not quite sure how to do it. Feel free to reject this PR and just cherry-pick the last commit.

[kain88-de]

@rathann can you please include a CHANGELOG entry and a comment in the docs that MDAnalysis expects little endian trz files.

[orbeckst]

Yes, sorry. I'll try, though I'm not quite sure how to do it. Feel free to reject this PR and just cherry-pick the last commit.

In general:

git checkout develop
git pull
git checkout -b fix-trz-endian   # create feature branch
# hack and add on your branch
# ...
git add package/MDAnalysis/coordinates/TRZ.py
git commit ...
git push -u origin fix-trz-endian 

and then do the PR. Typically, don't merge develop into your branch if you can avoid it because we often use squash and that does not always works well with merges.

[orbeckst]

I am replacing this PR with #1427.