Spaces at the end of lines can cause noise in patch sets
when editors or git gobbles them up during other relatively
minor changes to files.

Removing end of line changes makes long term maintenance easier as
well.

When reviewing git histories or patch sets, the "--ignore-space-change"
option can be useful in filtering out changes due only to spacing.

i.e.
git diff HEAD~2 --ignore-space-change

git-svn-id: http://svn.slicer.org/Slicer4/trunk@23021 3bd1e089-480b-0410-8dfb-8563597acbee