typecast fix for windows 64-bit compilation error

BitKeeper/etc/ignore:
  Added VC++Files/client/mysql_amd64.dsp to the ignore list

.bzrignore

@@ -1106,3 +1106,4 @@ vio/test-ssl
 vio/test-sslclient
 vio/test-sslserver
 vio/viotest-ssl
+VC++Files/client/mysql_amd64.dsp

client/mysql.cc

@@ -2154,7 +2154,7 @@ print_table_data_xml(MYSQL_RES *result)
     for (uint i=0; i < mysql_num_fields(result); i++)
     {
       tee_fprintf(PAGER, "\t<field name=\"");
-      xmlencode_print(fields[i].name, strlen(fields[i].name));
+      xmlencode_print(fields[i].name, (uint) strlen(fields[i].name));
       tee_fprintf(PAGER, "\">");
       xmlencode_print(cur[i], lengths[i]);
       tee_fprintf(PAGER, "</field>\n");