osdep: Introduce qemu_kill_thread()

osdep: Introduce qemu_kill_thread()

Add a function for sending signals to individual threads. It does not make
sense on Windows, so do not provide an implementation, so that if someone
uses it by accident, they will get a linker error.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Warner Losh <imp@bsdimp.com>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Message-Id: <20250117001542.8290-6-iii@linux.ibm.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20250207153112.3939799-15-alex.bennee@linaro.org>