Replaced multi-line strings with \n and concatenation #3462

If multi-line strings are used, the encoding of the source file will determine the result. Since the same file generates *nix and Windows scripts, no encoding will be correct except if explicit \n markers are used.
Merge pull request #1567 from drewhk/wip-3462-akka-plugin-crlf-vs-lf-drewhk

Replaced multi-line strings with \n and concatenation #3462