Generated classes should be using a different logger method

Right now the generated classes are using the errorf/warnf/etc. methods. However using these methods causes an incorrectly-reported source file name/line number/class name/method name in logs which use these formats.

Instead, the logf and logv methods should be used. Specifically, this form:

   logger.logf(FQCN, Level.INFO, cause, format, param1, param2, ...);

The FCQN should be a "private static final String" field defined in each logger class and initialized to "LoggerClassName.class.getName()". Be sure to import the org.jboss.logging.Logger.Level class either directly or use it via Logger.