services_discovery/sap.c: Make sure the thread will exit, even if in poll(). And properly lock the object.

include/vlc_objects.h: Use the usual macro trick, to publish a function that take as argument a vlc_object_t *, here for vlc_object_waitpipe().

(it does not find any error here)

 - Fix comments
 - Cache pagesize

Qt4 - Use a main instance of Sout for VLM. Clean DP since all dialogs (except Bookmarks that won't be done...) are done.

dtstospdif.c: Print a warning on frame size changes. Hopefully it will help us to debug the issue with SPDIF.

modules/audio_filter/converter/dtstospdif.c: We need a starting date. Fix a typo that cause the starting date not to be set.