Removed warnings for gcc 4.0

sql/log_event.cc:
  GCC 4.0 fix
sql/sql_acl.cc:
  GCC 4.0

sql/log_event.cc

@@ -708,7 +708,7 @@ failed my_b_read"));
   Log_event *res=  0;
 #ifndef max_allowed_packet
   THD *thd=current_thd;
-  uint max_allowed_packet= thd ? thd->variables.max_allowed_packet : ~0;
+  uint max_allowed_packet= thd ? thd->variables.max_allowed_packet : ~(ulong)0;
 #endif
 
   if (data_len > max_allowed_packet)

sql/sql_acl.cc

@@ -5172,7 +5172,7 @@ bool mysql_revoke_all(THD *thd,  List <LEX_USER> &list)
 				  grant_proc->db,
 				  grant_proc->tname,
                                   is_proc,
-				  ~0, 1))
+				  ~(ulong)0, 1))
 	  {
 	    revoked= 1;
 	    continue;
@@ -5240,7 +5240,7 @@ bool sp_revoke_privileges(THD *thd, const char *sp_db, const char *sp_name,
 	lex_user.host.length= strlen(grant_proc->host.hostname);
 	if (!replace_routine_table(thd,grant_proc,tables[4].table,lex_user,
 				   grant_proc->db, grant_proc->tname,
-                                   is_proc, ~0, 1))
+                                   is_proc, ~(ulong)0, 1))
 	{
 	  revoked= 1;
 	  continue;