bzr push into mysql-5.6 branch (marc.alff:4162 to 4163)

[Marc Alff]

 4163 Marc Alff	2012-08-24 [merge]
      NULL MERGE mysql-5.5 --> mysql-5.6

 4162 Alexander Nozdrin	2012-08-24
      Patch for Bug#14483430 (RECONSIDER MYSQL 5.6.6 BIND-ADDRESS BEHAVIOUR
      WHEN CONFIGURED AS DEFAULT *).
      
      The bug was introduced by WL#6301 (Change default value for the 'bind-address' option).
      
      The user visible problem was that the server didn't start with the default value
      of bind-address, which is '*'. The star means that the server should choose
      '::' or '0.0.0.0' depending on whether IPv6 is available on the box or not.
      
      The IPv6 detection was implemented by calling getaddrinfo() for the IPv6-address.
      It turned out, it is not enough -- getaddrinfo() might successfully return, but later
      OS failed to create an IPv6-socket. This problem is platform dependent
      (reproduced on CentOS 5.2).
      
      The fix is to make the check more strict -- try to create a dummy IPv6-socket
      after getaddrinfo() succeeds.
      
      No test case for the bug since it is platform specific.

    modified:
      sql/mysqld.cc
No bundle (reason: useless for push emails).