Daemonize changes pulled in -- daemon builds

many RPC functions added by the daemonize changes
(and related changes on the upstream dev branch that were not merged)
were commented out (apart from return).  Other than that, this *should*
work...at any rate, it builds, and that's something.

src/common/http_connection.h

@@ -0,0 +1,42 @@
+#pragma once
+
+#include "string_tools.h"
+#include "net/http_client.h"
+
+namespace tools {
+
+class t_http_connection {
+private:
+  epee::net_utils::http::http_simple_client * mp_http_client;
+  bool m_ok;
+public:
+  static unsigned int const TIMEOUT = 200000;
+
+  t_http_connection(
+      epee::net_utils::http::http_simple_client * p_http_client
+    , uint32_t ip
+    , uint16_t port
+    )
+    : mp_http_client(p_http_client)
+  {
+    // TODO fix http client so that it accepts properly typed arguments
+    std::string ip_str = epee::string_tools::get_ip_string_from_int32(ip);
+    std::string port_str = boost::lexical_cast<std::string>(port);
+    m_ok = mp_http_client->connect(ip_str, port_str, TIMEOUT);
+  }
+
+  ~t_http_connection()
+  {
+    if (m_ok)
+    {
+      mp_http_client->disconnect();
+    }
+  }
+
+  bool is_open()
+  {
+    return m_ok;
+  }
+}; // class t_http_connection
+
+} // namespace tools