Normalize line endings in files generated by the release script

[sdegueldre]

Currently, the release script generates files with mixed CRLF and LF-only line endings. This can cause annoying diffs when merging a release of owl into another project, as some tools will normalize the line endings to all CRLF, some to all LF, and some won't normalize them, causing different workflows for merging the release to clash and generate useless diff.