Please add constant to disable auth logging into error log when WP_DEBUG

Hey, thanks for all your work on this great plugin. The refactoring looks great.

In openlog() you run this chunk of code:

    } elseif (defined('WP_DEBUG') && true === WP_DEBUG) {
        error_log('WPf2b: Opened syslog', 0);
    }

And the matching section of syslog():

} elseif (defined('WP_DEBUG') && true === WP_DEBUG) {
	    error_log("WPf2b: Wrote to syslog: '{$msg}'", 0);

The purpose as I understand it is to duplicate syslog entries into the PHP error log/WP error log when WP_DEBUG is enabled, I guess as a way to simplify debugging of this plugin.

The thing is this causes a lot of unhelpful entries in our error log. We have an unusual setup WRT test site authentication and it generates a very distracting amount of noise in the logs.

IMHO a constant that disables this duplication would be a big improvement. These messages aren’t really errors in most cases, but rather business as usual, so having them be inherently linked to WP_DEBUG is problematic. My goal is that these logs are totally empty unless there’s a problem.

Here’s my edit to your plugin that solves it for me. openlog():

		if (defined('WPF2B_LOG_TO_ERROR_LOG') && WPF2B_LOG_TO_ERROR_LOG)
		    error_log('WPf2b: Opened syslog', 0);

and syslog():

		if (defined('WPF2B_LOG_TO_ERROR_LOG') && WPF2B_LOG_TO_ERROR_LOG)
		    error_log("WPf2b: Wrote to syslog: '{$msg}'", 0);

I beg of you: Please add this constant, or one with a different name obviously. I would be happy to set it to false if the default is true, or if you set it up so that the default was false I’d also be happy ??

Thanks for your consideration, good luck with everything.