[7u6] request for approval, 7174244: NPE in Krb5ProxyImpl.getServerKeys()

[Xuelei Fan]

Hi,

This is a request to backport a JDK 8 fix into JDK 7u6:
     7174244: NPE in Krb5ProxyImpl.getServerKeys()

The fix has already been pushed to JDK 8:
     http://hg.openjdk.java.net/jdk8/tl/jdk/rev/f8e72d7ff37d

The code changes for jdk7u6 are identical to the ones in jdk8.

We need to backport the fix to ensure that the cipher suite selection in
TLS handshaking (JSSE) is not blocked by the NPE.

I intend to push it to
     ssh://hg.openjdk.java.net/jdk7u/jdk7u-dev-gate/jdk

Regards,
Xuelei