Fixed hang in start_slave_threads() when thread dies quickly.


Docs/manual.texi:
  Changelog
client/mysqltest.c:
  Indentation cleanup
  More DBUG info
libmysql/libmysql.c:
  More DBUG info
  Give better error from reconnect()
mysql-test/r/rpl_rotate_logs.result:
  Update results
mysql-test/t/rpl_log_pos.test:
  Fix for fast machines
mysql-test/t/rpl_rotate_logs.test:
  Updated test to be more portable
scripts/mysql_zap.sh:
  Update for MacOSX
sql/mini_client.cc:
  Better error messages from reconnect.
  Indentation cleanups
sql/slave.cc:
  Fixed hang in start_slave_threads() when thread dies quickly.
sql/slave.h:
  Fixed hang in start_slave_threads() when thread dies quickly.