fix for missing EAGAIN definition on windows
Merge pull request #616 from naxuroqa/master

fix for missing EAGAIN definition on windows
Update DHT_bootstrap.c

Removed deprecated compilation instructions
Merge pull request #617 from fr0stycl34r/patch-1

Update DHT_bootstrap.c
Hardening the Tox network, document writing in progress.
Added message ids to action messages
Merge pull request #618 from nurupo/action-messages-with-id

Added message ids to action messages
Improved hole punching.
tox A/V: encode/decode and display/playback
tox A/V: RTP/MSI implementation
tox A/V: integration of A/V code into tox

Also-by: Sergey 'Jin' Bostandzhyan <jin@mediatomb.cc>
Small fix.
A/V integration in progress.

Added functions to send/receive msi packets via secure messenger
connections.

Made function to get the ip/port of a friend in Messenger.c public
Toxmsi build fix

Build failed on toxmsi building with
../toxmsi/AV_codec.c:46:28: fatal error: toxrtp_message.h: No such file or directory
 #include "toxrtp_message.h"
Merge pull request #619 from rayslava/master

Toxmsi build fix
Update TODO
Added resume support if the connection breaks during file sending.
Updated public api.
Merge pull request #621 from kigu/patch-3

Update TODO
Do not build tox_sync on win32