However, I suspect the Qt4 interface will break if there is more than
one video output _at_the_same_time_

This reverts commit 62148528.

Man QEventLoop and man QxtSignalWait can help fix that.

Since ffplay can read those files now :D

At the moment it is redumbdant with 6ec764ae
(QSizePolicy::Expanding) but it will be needed when the docked playlist
is re-implemented

Otherwise I sometimes get:
[????????] x11 video output error: X11 request 2.0 failed with error
code 3:
 BadWindow (invalid Window parameter)
 X Error of failed request:  BadWindow (invalid Window parameter)
 Major opcode of failed request:  2 (X_ChangeWindowAttributes)
 Resource id in failed request:  0x1000027
 Serial number of failed request:  26
 Current serial number in output stream:  27

Someone still needs to fix this properly though...

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

config.h is now included first, before any other header.
Signed-off-by: Antoine Cellerier <dionoea@videolan.org>

This doesn't change any functionnality.

This needs more checks, because we might have unneeded stuffs left.