spec/cli/server_spec.rb: Got them all to pass by adding File.expand_path in the right places.  In Windows, File.expand_path adds a drive letter to paths that start with a slash, and that was causing these specs to fail.  server_spec.rb now passes under JRuby 1.7.4 in Windows.
spec/cli/server_spec.rb: Get rid of a redundant call to new_cli.
Fixed a failing test in spec/server/doc_server_serialize_spec.rb.  Windows seems to use the Windows-1252 encoding for filenames instead of UTF-8 so the binary dump of special characters will be different.
Merge pull request #714 from DavidEGrayson/yard_pull_request_1

A few fixes to specs to make them pass under JRuby/Windows