fix bug
Search for OpenAL framework on OSX

if pkg-config does not find OpenAL on OSX, do a manual search for the
OpenAL framework.

references #140
Merge pull request #141 from jin-eld/openal-sx

Search for OpenAL framework on OSX
more fixes for line printing/scrolling
Merge branch 'master' of https://github.com/Tox/toxic
more fixes
include config header
fix len values
ignore ^C
implement toxdns3 username lookups
Add configure checks for libresolv
Remove redundant toxav header check

If pkg-config reports that toxav is there, it should be enough, no extra
checks needed.
Merge pull request #142 from jin-eld/add-libresolv

Add libresolv
..
don't need this
threads for DNS lookups
exit dns threads with pthread_exit