Merge weblab.(none):/home/marcsql/TREE/mysql-5.0-runtime

into  weblab.(none):/home/marcsql/TREE/mysql-5.1-rt50-merge


mysql-test/r/sp.result:
  Auto merged
mysql-test/t/mysql.test:
  Auto merged
mysql-test/t/sp.test:
  Auto merged
sql/item_cmpfunc.h:
  Auto merged
sql/sql_cache.cc:
  Auto merged
sql/sql_lex.cc:
  Auto merged