added missing overrides to pxnPlugin
  added missing StopPlugin() call
added * to debug log messages
added CONTAINER_NAME to pxnTask
a few fixes to dbPool
  can now remove broken db connections from the pool
  added max of 5 connect retry attempts before failing
  waits 1 second between connection attempts - to avoid flooding
  added connection id's
  added getAffectedRows() and getInsertId() functions
added logging of queries when in debug mode
  added quiet mode for some task queries
a few minor fixes to pxnVaultLink

git-svn-id: http://pxncommon.googlecode.com/svn/trunk@37 f5fbd6b6-c213-558c-f92f-5ab434f62466
changed version to pxnCommon 3.0.3

git-svn-id: http://pxncommon.googlecode.com/svn/trunk@38 f5fbd6b6-c213-558c-f92f-5ab434f62466