SVN importer does not honor SVN EOL properties
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I hand-checked a few files in the SVN repo and they all had svn:eol-style=native set. Those same files ended up in RTC with "Line Delimiter" set to "Binary".
You'll have to open a defect. Something doesn't seem right with the import setting the line delimiter. If you have a simple SVN dump that shows the issue, please include it in the defect.
Here's another data-point
Your best option is to file a defect. This doesn't seem like normal behaviour and I don't think any options during the import will give you the correct result.
FYI, you can respond to an answer instead of creating a new answer if you're only providing information about the problem and not really providing a solution. I'm converting your answers to comments.
OK I'll open a defect. The SVN dump isn't small I'm afraid but I'll with who-ever is working the defect to help recreate.