[13u] RFR: 8242141: New System Properties to configure the TLS signature schemes

[Andrew Brygin]

Hello,

 I would like to backport the fix for JDK-8242141 to jdk13u (13.0.4):

Bug: https://bugs.openjdk.java.net/browse/JDK-8242141
Original changeset: https://hg.openjdk.java.net/jdk/jdk/rev/1fbaab79e8e1
Webrev: http://cr.openjdk.java.net/~bae/13u/8242141/webrev.00/

 The original change applies almost cleanly, except a context difference
in src/java.base/share/classes/sun/security/ssl/SignatureScheme.java:

<                      ss.isPermitted(constraints)) {
---
>                      constraints.permits(SIGNATURE_PRIMITIVE_SET,
>                             ss.algorithm, null)) {

 The method SignatureScheme.isPermitted() has been introduced in jdk14
as a part of the fix for JDK-8226374, which has not been backported into
13u and 11u, so this part of the change has been adjusted to the current
state of 13u.

Thanks,
Andrew