JVM arg ending in backslash doesn't work
The following server.json doesn't work:
which outside of the JSON looks like this
breaks runwar since it turns the JVM args into a semi-colon delimited list and the trailing backslash escapes the semicolon which causes the two args to get concatenated into a single one with a semicolon between them.
Runwar needs to allow a double backslash to escape a literal backslash.