wip: xdg_surface_unset_minimized test case

Press Escape to minimize and show again

Usage:

  wlmessage \
    -buttons yes:0,no:1 \
    -title title \
    -titlebuttons Min,Max,Close message

Note:

You must add patched xdg-shell protocol from tizen

ie:

  dir="/home/pcoval/local/src/url/review.tizen.org/platform/upstream/weston"
  ln -fs "$dir/protocol/xdg-shell-client-protocol.h" ./toytoolkit/xdg-shell-client-protocol.h
  ln -fs "$dir/./protocol/xdg-shell-protocol.c" "./toytoolkit/xdg-shell-protocol.c"

Change-Id: I78db25fc5d86ecd31560703aef9458de66bff01b
Signed-off-by: Philippe Coval <philippe.coval@open.eurogiciel.org>