remove unneeded printf's/prevent stdout spam
Merge branch 'JFreegman-debug'
Fix some toxav warnings
Update with upstream
one decoding thread per call
Merge branch 'notsecure-split-video'
Fixed threading bug.
Set pointer to NULL when freeing to fix issue.
Merge branch 'master' of https://github.com/mannol1/toxcore

Conflicts:
	toxav/toxav.c
The receiver of a file now needs to confirm that he did receive it
correctly.

This should fix an issue that happened when both clients got
disconnected when the file was almost finished sending. The sender
would show that the file had been sent successfully when it had not.

See the modifications to tox.h