[7u-dev] Request for approval: 7176574: sun/security/krb5/auto/TcpTimeout.java failed with solaris-i586

[Wang Weijun]

Hi All 

This is a request to backport several jdk8 fixes on the Kerberos 5 TcpTimeout.java into jdk7u. 

   7176574: sun/security/krb5/auto/TcpTimeout.java failed with solaris-i586
   http://hg.openjdk.java.net/jdk8/tl/jdk/rev/cea72c2bf071

   7162687: enhance KDC server availability detection
   http://hg.openjdk.java.net/jdk8/tl/jdk/rev/a2fc04c2dfc8

   7122169: TcpTimeout fail for various reasons
   http://hg.openjdk.java.net/jdk8/tl/jdk/rev/11698dedbe79

The jdk8 fixes include code changes to other files and are not suitable to be backported all. Here I only intend to backport changes for sun/security/krb5/auto/TcpTimeout.java and merge all of them as a backport of the last bug 7176574.

The changes are exactly the same as in jdk8.

The fix is test only.

Thanks 
Weijun