EyeTV: fixed stupid bug (my own fault), performance improvememts by reducing the number of write() to VLC

rename growl to growl_udp

* include/vlc_threads_funcs.h: add define for ETIMEDOUT on WIN32 and remove return 0 from void function vlc_spin_destroy

 - lock/unlock/signal/wait/destroy functions cannot fail unless there is a bug,
   so have them return void rather than an unused int, and assert against bugs.
 - Fix a few corner case minor bugs.
 - Use fprintf() rather than msg_Err() to avoid infinite recursions.

causing segfault on Windows platform

macosx/vlc_app: Access meta via valueForKeyPath: to make sure we trigger art work fetching. We may change the metaDictionary a bit to prevent non trapped access.