javac.properties
----------------
This has \n as line separators.
These will not be expanded to CRLF pairs when the message is printed out
using a PrintStream or PrintWriter.

Should we hack stdout to expand '\n' to CRLF (which seems not to be required
the way we force stdin/out/err to binary mode on start up).
Should each line be separately
written using println or '\n' converted to file.separator?

There may be some other files with this problem, e.g. rmic.properties