DESC
Uml support: reorganize PTRACE_SYSEMU support
EDESC
From: Bodo Stroesser <bstroesser@fujitsu-siemens.com>

This patch is based on 2.6.9-vanilla + host-skas3-2.6.9-v7.patch
It reorganizes the code without changing the behavior of the
host kernel. This is done to free TIF_SYSCALL_EMU from double
use as a preparation for SYSEMU_SINGLESTEP extension.

Signed-off-by: Bodo Stroesser <bstroesser@fujitsu-siemens.com>