Big patch to make embedded-server working in 5.x

Now it supports queries returning several results
(particularly important with the SP)

mysql-test/t/init_connect.test

@@ -2,6 +2,8 @@
 # Test of init_connect variable
 #
 
+# should work with embedded server after mysqltest is fixed
+-- source include/not_embedded.inc
 connect (con0,localhost,root,,);
 connection con0;
 select hex(@a);