oslcquery doesn't handle escaping of \ and " in literal strings as required by the OSLC Query spec

[barny]

For OSLC Query, literal strings in the oslc.where which want to contain a \ or a " must escape these by prefixing with . This currently isn't done, and it might be a struggle to figure out how to put these literals in a commandline already suffering from Windows command line substitution.