Fixed bug in SELECT DISTINCT ... ORDER BY not-used-column.
Fixed bug in pthread_mutex_trylock with HPUX 11.0


Docs/manual.texi:
  Changelog
include/my_pthread.h:
  Fix for pthread_mutex_trylock when used with SAFEMUTEX
include/violite.h:
  Fixed bug in blocking handling when compiling with OPENSSL (caused hangup in client code)
innobase/buf/buf0buf.c:
  Fixed wrong format string
libmysqld/lib_sql.cc:
  Fixed hangup in embedded server.
mysql-test/r/distinct.result:
  Fixed bug in SELECT DISTINCT ... ORDER BY not-used-column
mysql-test/t/distinct.test:
  Fixed bug in SELECT DISTINCT ... ORDER BY not-used-column
mysys/my_pthread.c:
  Cleanup of pthread_xxx rewrite code.
  Fixed bug in pthread_mutex_trylock with HPUX 11.0
sql/gen_lex_hash.cc:
  Smaller hash array
sql/mysqld.cc:
  Fixed hangup in embedded server.
sql/sql_select.cc:
  Fixed bug in SELECT DISTINCT ... ORDER BY not-used-column
vio/vio.c:
  Added vio_ssl_blocking
vio/viossl.c:
  Added vio_ssl_blocking