r7633: this patch started as an attempt to make the dcerpc code use a given

event_context for the socket_connect() call, so that when things that
use dcerpc are running alongside anything else it doesn't block the
whole process during a connect.

Then of course I needed to change any code that created a dcerpc
connection (such as the auth code) to also take an event context, and
anything that called that and so on .... thus the size of the patch.

There were 3 places where I punted:

  - abartlet wanted me to add a gensec_set_event_context() call
    instead of adding it to the gensec init calls. Andrew, my
    apologies for not doing this. I didn't do it as adding a new
    parameter allowed me to catch all the callers with the
    compiler. Now that its done, we could go back and use
    gensec_set_event_context()

  - the ejs code calls auth initialisation, which means it should pass
    in the event context from the web server. I punted on that. Needs fixing.

  - I used a NULL event context in dcom_get_pipe(). This is equivalent
    to what we did already, but should be fixed to use a callers event
    context. Jelmer, can you think of a clean way to do that?

I also cleaned up a couple of things:

 - libnet_context_destroy() makes no sense. I removed it.

 - removed some unused vars in various places

source/scripting/ejs/smbcalls.c

@@ -81,7 +81,10 @@ static int ejs_systemAuth(TALLOC_CTX *tmp_ctx, struct MprVar *auth, const char *
 	NTSTATUS nt_status;
 	DATA_BLOB pw_blob;
 
-	nt_status = auth_context_create(tmp_ctx, auth_unix, &auth_context);
+	/*
+	  darn, we need some way to get the right event_context here
+	*/
+	nt_status = auth_context_create(tmp_ctx, auth_unix, &auth_context, NULL);
 	if (!NT_STATUS_IS_OK(nt_status)) {
 		mprSetPropertyValue(auth, "result", mprCreateBoolVar(False));
 		mprSetPropertyValue(auth, "report", mprCreateStringVar("Auth System Failure", 1));

source/scripting/ejs/smbcalls_cli.c

@@ -232,7 +232,7 @@ static int ejs_cli_tree_connect(MprVarHandle eid, int argc, MprVar **argv)
 	union smb_tcon tcon;
 	TALLOC_CTX *mem_ctx;
 	NTSTATUS status;
-	char *password = "";
+	const char *password = "";
 
 	/* Argument parsing */