Change LoadService to cope with classpath entries containing spaces. This
doesn't normally happen when JRuby is invoked from the command-line, but seems
to happen when running via jruby-rack.
Bugfix for issue #1248
@mkristian As requested, here's a PR for the patches associated with #1248. Let me know if there's anything else I can do :)
added IT for #1477
should fix #1248 and #1393