SSL Trace improvements
SSL Trace improvements

A fix formatting fixes.

SSL Trace: internal constification
-  static trace tables
-  trace methods arguments

SSL Trace: enhance error message when tracing an invalid extension packet
... instead of just "Message length parse error!".

SSL trace: add Maximum-Fragment-Length TLS extension log support

Reviewed-by: Andy Polyakov <015edf36635e030d5e009e08808a59984e629740@openssl.org>
Reviewed-by: Rich Salz <c04971a99e5a9ee80eaab4b1deb37e845b0bd697@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/4353)

openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl