Lots of portability fixes.

Fixed shutdown on HPUX.
Fixed bug in query cache.


Docs/manual.texi:
  Changelog
configure.in:
  Fixes for HPUX
include/m_string.h:
  Fixes for Purify
include/my_pthread.h:
  Fixes for HPUX
include/raid.h:
  Portability fix.
innobase/include/univ.i:
  Portability fix.
mysql-test/mysql-test-run.sh:
  Added --manual-gdb
mysql-test/r/rpl_log.result:
  Portability fix
mysql-test/t/rpl_log.test:
  Portability fix
mysys/my_pthread.c:
  Portability fix (HPUX)
mysys/raid.cc:
  Portability fix
mysys/thr_mutex.c:
  Portability fix
scripts/mysql_install_db.sh:
  Clean up install message
sql-bench/test-alter-table.sh:
  Fix testsuite
sql/ha_innobase.cc:
  Fixed stack overwrite.
sql/log_event.cc:
  Fixed purify warning
sql/mysqld.cc:
  Added patch from FreeBSD port.
  Fixed shutdown on HPUX.
sql/slave.cc:
  Cleanup
sql/sql_cache.cc:
  Binary search in 'step' searching
  Check maximal block in bin
  Limit of comparasions number in list of memory blocks.
  Fixed bug in pack()
sql/sql_cache.h:
  Binary search in 'step' searching
  Check maximal block in bin
  Limit of comparasions number in list of memory blocks.
  Fixed bug in pack()
sql/sql_parse.cc:
  Optimize
tools/mysqlmanager.c:
  Portability fix

scripts/mysql_install_db.sh

@@ -321,8 +321,8 @@ then
   fi
   echo "PLEASE REMEMBER TO SET A PASSWORD FOR THE MySQL root USER !"
   echo "This is done with:"
-  echo "$bindir/mysqladmin -u root -p password 'new-password'"
-  echo "$bindir/mysqladmin -u root -h $hostname -p password 'new-password'"
+  echo "$bindir/mysqladmin -u root password 'new-password'"
+  echo "$bindir/mysqladmin -u root -h $hostname password 'new-password'"
   echo "See the manual for more instructions."
   #
   # Print message about upgrading unless we have created a new db table.