[11u] RFR: 8233228: Disable weak named curves by default in TLS, CertPath, and Signed JAR

[Lindenmaier, Goetz]

Hi

I would like to downport this for parity with 11.0.9-oracle.

It applies clean but keytool/Main.java does not compile.
It calls fullDisplayAlgName() to print the warning which is not in 11.
I included this rather simple function. This results in the same
printout as in jdk15 and makes sure later changes (8172404) downport clean.

http://cr.openjdk.java.net/~goetz/wr20/8233228-disable_weak_curves-jdk11/01/

Please review.

https://bugs.openjdk.java.net/browse/JDK-8233228
https://hg.openjdk.java.net/jdk/jdk14/rev/169e9680821c

Best regards,
  Goetz.