backport of a fix made in 4.0 to make replication work in 64-bit binaries.

The 4.0 changeset was:
ChangeSet@1.1579.3.1, 2003-09-26 23:43:22+02:00, guilhem@mysql.com
  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

@@ -496,7 +496,7 @@ mc_mysql_connect(MYSQL *mysql,const char *host, const char *user,
 {
   char		buff[100],*end,*host_info;
   my_socket	sock;
-  ulong		ip_addr;
+  uint32	ip_addr;
   struct	sockaddr_in sock_addr;
   uint		pkt_length;
   NET		*net= &mysql->net;