RFR [14] JDK-8233621 : Mismatch in jsse.enableMFLNExtension property name

[Xuelei Fan]

Hi,

May I get the following update reviewed?
    http://cr.openjdk.java.net/~xuelei/8233621/webrev.00/

Trivial update, no new regression test.

The system property, "jsse.enableMFLNExtension", was introduced in JDK 9 
(See JSSE Reference Guides).  However, the implementation code uses 
"jsse.enableMFLExtension" (without 'N') instead.

With this update, temporarily, if either of the two properties set to 
true, the extension is switch on. Note that we may remove the 
"jsse.enableMFLExtension" property in the future.  Please don't continue 
to use the misspelling property any longer.

Thanks,
Xuelei