message: change for go seafile server
diff: #include <QHttpMultiPart>
  #include <QHttpPart>
  #include <QFile>
  +#include <QUuid>
  #include <QSslError>
  #include <QSslConfiguration>
  #include <QSslCertificate>
  @@ -399,6 +400,8 @@ void PostFileTask::sendRequest()
  kTargetFileParam);
  parentdir_part.setBody(::pathJoin(parent_dir_, name_).toUtf8());
  }
  + QString str_boundary = "_.Seafile._" + QUuid::createUuid().toString();
  + multipart->setBoundary(str_boundary.toUtf8());
  multipart->append(parentdir_part);
  // "relative_path" param
  