In MySQL 5.5 the new reserved words include:
SLOW                    as in FLUSH SLOW LOGS
GENERAL                 as in FLUSH GENERAL LOGS
IGNORE_SERVER_IDS       as in CHANGE MASTER ... IGNORE_SERVER_IDS
MASTER_HEARTBEAT_PERIOD as in CHANGE MASTER ... MASTER_HEARTBEAT_PERIOD

These are not reserved words in standard SQL, or in Oracle 11g,
and as such, may affect existing applications.

We fix this by adding the new words to the list of 
keywords that are allowed for labels in SPs.

mysql-test/t/keywords.test:
  Test case that checks that the target words can be used
  for naming fields in a table or as local routine variable
  names.