Fix compilation on windows for ipv6 code
Merge pull request #593 from BtbN/win_fixes

Fix compilation on windows for ipv6 code
nTox: keep bootstrap()ping every 10 seconds, until we get a connection running (the initial one might get lost, it IS done via UDP after all)

nTox.c:
- main(): keep calling tox_bootstrap_from_address() every 10 seconds, until the connection is established
Merge pull request #594 from FullName/nTox.KeepBootstrappingUntilConnected

nTox: keep bootstrap()ping every 10 seconds, until we get a connection...
Small fix in Lossless UDP.
Thou shalt not take singular commands after an if into #ifdef DEBUG...

toxcore/Messenger.c:
- Messenger_load_old(): brackets around an #ifdef'ed line to avoid data pointer being only pushed forward properly in the error case
Merge pull request #595 from FullName/MessengerLoadSave

Thou shalt not take singular commands after an if into #ifdef DEBUG...
Merge branch 'master' of https://github.com/irungentoo/ProjectTox-Core
Lossless UDP is now suitable for sending files.

Added some actual flow control and made send/recieve buffers grow when
necessary.
Connection speed ups.