Attaching an object makes it visible in the hierarchy. This would have
been a problem in some cases with vlc_object_find(), but this function
was removed.

Nobody is ever going to use this if it needs to be enabled.

"wget does it" is not a sufficient reason to do it.

Close #3840

Win32 only, for some reason (Qt bug?)
Close #3976

Broken in 9b34074c

also remove obsolete configure option

As a side effect it is now build at the display size.

new spin box that enables subsdelay filter and disables it when the value is set to 0
the spin box tooltip and suffix are updated according to the subsdelay mode
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

The thread are already created with the right priority. If not, then
vlc_clone() should be fixed instead.
Also, the vlc_thread_set_priority() calls on the main interface thread
seem bogus, as the target thread is dedicated to monitor the libvlc
death and is not the main running thread.

Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

Close #4776

Useful for people with accessibility difficulties. No icon yet.
Close #2253

They are not used by modules anymore.