more fixes for test cases

mysql-test/suite/innodb/include/restart_and_reinit.inc:
  drop and recreate mysql.innodb* tables when deleting innodb table spaces
mysql-test/t/ssl_8k_key-master.opt:
  with loose- prefix ssl errors are ignored
sql-common/client.c:
  compiler warnings
sql/field.cc:
  use the new function
sql/item.cc:
  don't convert time to double or decimal via longlong,
  this loses sub-second part.
  Use dedicated functions.
sql/item.h:
  incorrect cast_to_int type for params
sql/item_strfunc.cc:
  use the new function
sql/lex.h:
  unused
sql/my_decimal.h:
  helper macro
sql/sql_plugin.cc:
  workaround for a compiler warning
sql/sql_yacc.yy:
  unused
sql/transaction.cc:
  fix the merge for SERVER_STATUS_IN_TRANS_READONLY protocol flag
storage/sphinx/CMakeLists.txt:
  compiler warnings

mysql-test/suite/innodb/r/innodb_bug57904.result

@@ -13,18 +13,8 @@ INDEX (customer_id),
 FOREIGN KEY (customer_id)
 REFERENCES customer(id)
 ) ENGINE=INNODB;
-SELECT * FROM INFORMATION_SCHEMA.REFERENTIAL_CONSTRAINTS;
-CONSTRAINT_CATALOG	def
-CONSTRAINT_SCHEMA	mysql
-CONSTRAINT_NAME	innodb_index_stats_ibfk_1
-UNIQUE_CONSTRAINT_CATALOG	def
-UNIQUE_CONSTRAINT_SCHEMA	mysql
-UNIQUE_CONSTRAINT_NAME	PRIMARY
-MATCH_OPTION	NONE
-UPDATE_RULE	RESTRICT
-DELETE_RULE	RESTRICT
-TABLE_NAME	innodb_index_stats
-REFERENCED_TABLE_NAME	innodb_table_stats
+SELECT * FROM INFORMATION_SCHEMA.REFERENTIAL_CONSTRAINTS
+WHERE table_name = 'product_order';
 CONSTRAINT_CATALOG	def
 CONSTRAINT_SCHEMA	test
 CONSTRAINT_NAME	product_order_ibfk_1