Merge pull request #77 from pthedinger/master

Bug fixes to prevent lock up and segfaults.
Fix incorrectly named stream flag functions/variables.
Prevent segfaults when the user specifies an invalid End Station index or there are no End Stations yet.
Merge github.com:audioscience/avdecc-lib
Adding command-line options for test mode and interface.

Test mode puts the output into unbuffered mode and allows the user to attempt to connect a station to itself.
More fixes for the is_valid checking for connect/disconnect.
Fix out-of-order packet problem with ACMP which would cause lock up.
Remove invalid comment.
Merge branch 'master' of https://github.com/pthedinger/avdecc-lib