macosx: Make sure makeKeyAndOrderFront doesn't hide and then display the window if it was visible and not faded.

Should fix the input item leak error when quitting VLC.

We have been able to autodetect this for ages

macosx: Remove VLCEmbeddedDetachedVout because it's not used. (Or at leat doesn't bring more than its superclass).

Fixes #1684.

This reverts commit 49776bde.

the help of thedj)
Clean up.

month old)

Fixed scale loading conditions.

changes except a few more return checks)

In some error cases p_block will have been freed before p_block is
dereferenced.
Signed-off-by: Rémi Denis-Courmont <rdenis@simphalempin.com>

with #1488)