psz_object_name can only be read from the thread calling module_need()
for the current object. As an alternative, module_need() would have to
be called before vlc_object_attach(), which would break var_CreateGet*.

Fix BDA compilation for Win64

Work done by NightStrike

and the pointer is never modified).

This reverts "test: Disable test_media_list_player as it deadlocks."

This reverts commit 3403c427.

Also fix the initial refcount for the media list, that was causing a bunch of problem on the test suite.

vlc_assert_locked should probably be exported, as it would have been useful here.