[PATCH] taskmgr: Implement end process tree

[Zhiyi Zhang]

This should get https://bugs.winehq.org/show_bug.cgi?id=39640 closed.

Partially base on François's idea.

Signed-off-by: Zhiyi Zhang <zzhang(a)codeweavers.com>
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  programs/taskmgr/endproc.c | 137 
++++++++++++++++++++++++++++++++++++++++++---
  1 file changed, 130 insertions(+), 7 deletions(-)