Update to Ocamlnet v4.

Also update dependencies to add camlp4 and ounit.

ocaml/_tags

@@ -1,3 +1,3 @@
-true: package(ssl), package(netclient), package(netstring), package(equeue-ssl)
+true: package(netclient), package(netstring)
 <test.*>: package(oUnit)
 <irc.*>: package(irc-client.lwt)

ocaml/opam

@@ -13,6 +13,8 @@ install: [make "install"]
 remove: ["ocamlfind" "remove" "cheesebot"]
 depends: [
   "ocamlfind" {build}
+  "camlp4"
+  "ounit"
   "lwt"
   "conf-gnutls"
   "ocamlnet"

ocaml/simpleHttp.ml

@@ -1,17 +1,8 @@
 open Printf
-open Http_client
+open Nethttp_client
-open Https_client
 open Nethtml
 open Netencoding;;
 
-Ssl.init();
-Convenience.configure_pipeline
-(fun p ->
-  let ctx = Ssl.create_context Ssl.TLSv1 Ssl.Client_context in
-  let tct = https_transport_channel_type ctx in
-  p # configure_transport https_cb_id tct
-)
-
 
 let extract_string_value document =
   match document with