Fix for 64-bit machines.

I am almost sure this is the cause for
BUG#1381 [Opn]: Bug in replication on HP-UX 64 bit binaries?
BUG#1256 [CRp]: Replication slave fails to connect to master in 64-bit version (Solaris)
The reason why I think it's wrong is that the normal client code has 
uint32 ip_addr.
(of course on 32-bit machines it does not matter, but on 64-bit it does).

sql/mini_client.cc

@@ -547,7 +547,7 @@ mc_mysql_connect(MYSQL *mysql,const char *host, const char *user,
 {
   char		buff[NAME_LEN+USERNAME_LENGTH+100],*end,*host_info;
   my_socket	sock;
-  ulong		ip_addr;
+  uint32	ip_addr;
   struct	sockaddr_in sock_addr;
   ulong		pkt_length;
   NET		*net= &mysql->net;