so that 04_focuspoll patch can be in sync with the submission branch

    - 01_add_vertical_guides_to_showMouse
    - 02_add_bell_plugin
    - 03_cursors
    - 03_potfiles
    - 03_smooth_option
    - 04_focuspoll
    - 04_focuspoll_after_opengl
    - 06_ezoom_focus_tracking
    - 07_translations-fr

Set the NET_WM_STATE_FOCUSED property on windows of type dock or spashscreen so that they don't get the state GTK_STATE_FLAG_BACKDROP set by default.

Based on xfwm4 commit:
https://git.xfce.org/xfce/xfwm4/commit/?id=0feb29e78bb3

Approved by: Marco Trevisan (Treviño)

As per https://gcc.gnu.org/ml/gcc-help/2010-10/msg00255.html we can't define some
static variables as extern and link them statically inside objects.
Otherwise these might be redefined multiple times, allocated mutiple times and
destroyed, again, multiple times causing memory errors. (LP: #1749957, #1750619)

Approved by: Andrea Azzarone

Approved by: Marco Trevisan (Treviño)

See https://gcc.gnu.org/ml/gcc-help/2010-10/msg00255.html