linux-user: translate signal number on return from sigtimedwait
On success, sigtimedwait() returns a signal number that needs to be translated from a host value to a target value. This change also fixes issues with sigwait (that is implemented using sigtimedwait()). Signed-off-by: NPetar Jovanovic <petar.jovanovic@imgtec.com> Signed-off-by: NRiku Voipio <riku.voipio@linaro.org> Reviewed-by: NPeter Maydell <peter.maydell@linaro.org>
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