Port server core to Android

 * Android libutils locks and threads
 * Add Android.mk for building with AOSP
 * Add logger sink for Android
 * Regenerate Android.mk when CMake is run
diff --git a/common/rfb/Logger_android.h b/common/rfb/Logger_android.h
new file mode 100644
index 0000000..ac1a7fe
--- /dev/null
+++ b/common/rfb/Logger_android.h
@@ -0,0 +1,40 @@
+/* Copyright (C) 2015 TigerVNC
+ *
+ * This is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This software is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this software; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
+ * USA.
+ */
+
+// -=- Logger_android - log to Android's logd
+
+#ifndef __RFB_LOGGER_ANDROID_H__
+#define __RFB_LOGGER_ANDROID_H__
+
+#include <time.h>
+#include <rfb/Logger.h>
+
+namespace rfb {
+
+  class Logger_Android : public Logger {
+  public:
+    Logger_Android(const char* loggerName);
+    virtual ~Logger_Android();
+
+    virtual void write(int level, const char *logname, const char *message);
+  };
+
+  void initAndroidLogger();
+};
+
+#endif