buffer.hh poller.hh stream.hh: use class not struct
poller: implement loop() and break_loop()
Implement the connector
connector: connect_address() not connect_fqdn()
Move defs from poller.c to utils.h
Implement the listener
connector: sync impl with listener
stream: adjust API
listener: export get_poller()
Implement echoserver
stream.cpp: avoid doofus
Makefile.in: start to compile the C++ code
Add test_echoserver.cpp
*.h: add C++ guards
Misc bugfixes and log messages added while testing
echoserver: significant rewrite
Add Android.mk makefile
Remove libneubot_java

The code to automatically generate the Java wrappers was moved
by @alessandro40 into neubot_android.
Stop generating LibNeubot.java

It was already deprecated and unused. Now that the Java-related
stuff was moved by @alessandro40 into neubot_android, it is urgent
to remove LibNeubot.java as well, to cleanup this repository.
Do not automatically update libneubot_python