Fix for bug #22227: ulong not defined for client library

  - don't use (ulong) type cast in the include/mysql_com.h as it's not 
    a standard type and might cause compilation errors on some platforms.

include/mysql_com.h

@@ -137,11 +137,11 @@ enum enum_server_command
 #define CLIENT_TRANSACTIONS	8192	/* Client knows about transactions */
 #define CLIENT_RESERVED         16384   /* Old flag for 4.1 protocol  */
 #define CLIENT_SECURE_CONNECTION 32768  /* New 4.1 authentication */
-#define CLIENT_MULTI_STATEMENTS (((ulong) 1) << 16)   /* Enable/disable multi-stmt support */
-#define CLIENT_MULTI_RESULTS    (((ulong) 1) << 17)  /* Enable/disable multi-results */
+#define CLIENT_MULTI_STATEMENTS (1UL << 16) /* Enable/disable multi-stmt support */
+#define CLIENT_MULTI_RESULTS    (1UL << 17) /* Enable/disable multi-results */
 
-#define CLIENT_SSL_VERIFY_SERVER_CERT	(((ulong) 1) << 30)
-#define CLIENT_REMEMBER_OPTIONS	(((ulong) 1) << 31)
+#define CLIENT_SSL_VERIFY_SERVER_CERT (1UL << 30)
+#define CLIENT_REMEMBER_OPTIONS (1UL << 31)
 
 #define SERVER_STATUS_IN_TRANS     1	/* Transaction has started */
 #define SERVER_STATUS_AUTOCOMMIT   2	/* Server in auto_commit mode */