Remove some warnings


Docs/manual.texi:
  Solaris and gcc
include/ft_global.h:
  Remove warnings
include/myisam.h:
  Query cache
include/myisammrg.h:
  Query cache
include/mysql_com.h:
  Query cache
libmysqld/lib_sql.cc:
  Query cache
myisam/ft_boolean_search.c:
  Remove warnings
myisam/ft_dump.c:
  Remove warnings
myisam/ft_parser.c:
  Remove warnings
myisam/ft_static.c:
  Remove warnings
myisam/ft_update.c:
  Remove warnings
myisam/ftdefs.h:
  Remove warnings
myisam/mi_delete.c:
  Query cache
myisam/mi_locking.c:
  Query cache
myisam/mi_update.c:
  Query cache
myisam/myisamdef.h:
  Optimize for Ia64
myisammrg/myrg_extra.c:
  Query cache
mysys/mf_keycache.c:
  DBUG statements
regex/cclass.h:
  Remove warnings
regex/cname.h:
  Remove warnings
regex/main.c:
  Remove warnings
regex/regcomp.c:
  Remove warnings
regex/regcomp.ih:
  Remove warnings
regex/regerror.c:
  Remove warnings
regex/reginit.c:
  Remove warnings
regex/split.c:
  Remove warnings
sql-bench/test-connect.sh:
  Make tests query-cache safe.
sql-bench/test-transactions.sh:
  Fix for old perl versions
sql/convert.cc:
  Query cache
sql/ha_myisammrg.cc:
  Query cache
sql/ha_myisammrg.h:
  Query cache
sql/handler.cc:
  Query cache
sql/item_create.cc:
  Query cache
sql/item_func.cc:
  Remove warnings
sql/item_func.h:
  Remove warnings
sql/lex.h:
  Query cache
sql/mysql_priv.h:
  Query cache
sql/mysqld.cc:
  Query cache
sql/net_serv.cc:
  Query cache
sql/sql_cache.cc:
  Query cache
sql/sql_class.cc:
  Query cache
sql/sql_class.h:
  Query cache
sql/sql_db.cc:
  Query cache
sql/sql_delete.cc:
  Query cache
sql/sql_insert.cc:
  Query cache
sql/sql_parse.cc:
  Query cache
sql/sql_select.cc:
  Query cache
sql/sql_table.cc:
  Query cache
sql/sql_update.cc:
  Query cache
sql/sql_yacc.yy:
  Query cache