fix OS check in toxic
fix define checks
fix potential memory issue
Prevented possible MITM attack.

Friends must now send to themselves at least one encrypted ping packet
every 5 seconds.

If no encrypted ping packets are recieved from a friend within 10
seconds the connection is killed.
Realloc apparently doesn't always behave like free() if size is zero.
Fixed segfault.
Merge with upstream
Merge pull request #497 from rose-m/master

Small OS check fix
fix tab bar bugs
fix tab bar bugs
Merge pull request #499 from JFreegman/master

fix toxic tab bar bugs
Merge pull request #1 from irungentoo/master

Updating master