[Discuss-gnuradio] GNURadio OSX Fixes in Truck

[Michael Dickens]

I've patched some nasty bugs in my OSX code, rare ones that took
quite a bit of effort to track down: improper use of mutex'es and
condition's when protecting variables shared between multiple
threads.  The fixes affect both audio and USB transport for OSX only,
and would cause the application to hang for no apparent reason
(requiring ^C to kill).  Anyone using GNU Radio on a OSX (PCC or
Intel) should update to the latest SVN trunk to get these fixes. - MLD