Make promoe work with DrDolittle.

This moves the c++ wrapper into promoe so we don't depend on a patched
version of xmms2 anymore. You should be able to run this with a drdolittle
out of the box. I also disabled the medialib browser for future enabling.

xmmsclient_promoe.cpp

@@ -0,0 +1,112 @@
+#include <xmmsclient/xmmsclient.h>
+#include <sigc++/sigc++.h>
+
+#include "xmmsclient_promoe.h"
+
+static
+void generic_handler (xmmsc_result_t *res, void *userdata)
+{
+	XMMSResult* r = static_cast<XMMSResult*>(userdata);
+	if (!r) {
+		cout << "********* FATAL ERROR ***********" << endl;
+		cout << "The generic handler was called without a result!" << endl;
+		return;
+	}
+	r->emit ();
+}
+
+XMMSClient::XMMSClient (const char *name)
+{
+	m_xmmsc = xmmsc_init (name);
+}
+
+bool
+XMMSClient::connect (const char *path)
+{
+	if (!xmmsc_connect (m_xmmsc, path)) {
+		return false;
+	}
+
+	return true;
+}
+
+XMMSClient::~XMMSClient ()
+{
+	xmmsc_unref (m_xmmsc);
+}
+
+XMMSResult::XMMSResult (xmmsc_result_t *res)
+  : m_res(res), m_inited(false), m_signal()
+{
+}
+
+XMMSResult::XMMSResult (const XMMSResult &src)
+  : m_res(src.m_res)
+{
+}
+
+void
+XMMSResult::restart (void)
+{
+	xmmsc_result_t *nres;
+	nres = xmmsc_result_restart (m_res);
+	xmmsc_result_unref (m_res);
+	xmmsc_result_unref (nres);
+	m_res = nres;
+}
+
+void
+XMMSResult::connect (const sigc::slot<void, XMMSResult*>& slot_)
+{
+	if (!m_inited) {
+		xmmsc_result_notifier_set (m_res, &generic_handler, this);
+		m_inited = true;
+	}
+	m_signal.connect (slot_);
+}
+
+static void
+dict_foreach (const void *key, 
+			  xmmsc_result_value_type_t type, 
+			  const void *value, 
+			  void *udata)
+{
+	list<const char *> *i (static_cast<list<const char*>*>(udata));
+	i->push_front (static_cast<const char*>(key));
+}
+
+list<const char *>
+XMMSResultDict::getDictKeys (void)
+{
+	list<const char *> i;
+
+	xmmsc_result_dict_foreach (m_res, dict_foreach, static_cast<void*>(&i));
+
+	return i;
+}
+
+static void
+propdict_foreach (const void *key, 
+			  xmmsc_result_value_type_t type, 
+			  const void *value, 
+			  const char *source,
+			  void *udata)
+{
+	list<const char *> *i (static_cast<list<const char*>*>(udata));
+	i->push_front (static_cast<const char*>(key));
+}
+
+list<const char *>
+XMMSResultDict::getPropDictKeys (void)
+{
+	list<const char *> i;
+
+	xmmsc_result_propdict_foreach (m_res, propdict_foreach, static_cast<void*>(&i));
+
+	return i;
+}
+
+XMMSResult::~XMMSResult ()
+{
+	xmmsc_result_unref (m_res);
+}