[PATCH 4/5] win32u: Move ArrangeIconicWindows implementation from user32.

[Jacek Caban]

Signed-off-by: Jacek Caban <jacek(a)codeweavers.com>
---
  dlls/user32/winpos.c | 123 +------------------------------------------
  dlls/win32u/window.c |  44 ++++++++++++++++
  include/ntuser.h     |   1 +
  3 files changed, 46 insertions(+), 122 deletions(-)