Illegal reflective access by com.sun.mail.util.SocketFetcher

[jmehrens]

AngusMail version of: jakartaee/mail-api#391 The Angus PR is: #11 but this seems to be abandon.

Current plan of action is to:

1. Take that PR and add the needed polish to complete it (with credit to the original author).
2. Explore using the default X509TrustManager::checkClientTrusted and X509TrustManager::checkServerTrusted as a way to allowed access to sun.security.util.HostnameChecker.
3. Explore adding a way to wrap the existing reflective access checker and crude checker into internal hostname validators that can be declared as a property.
4. Explore the ability to chain hostname validators as logical AND and logical OR.
5. Explore a follow on ticket to implement a mail new property to set endpoint validation. See: JDK-8062515 - Migrate use of sun.security.** to supported API and Endpoint Identification Algorithm Name.