In preparation for multi-threaded TCG we remove tcg_exec_all and move
all the CPU cycling into the main thread function. When MTTCG is enabled
we shall use a separate thread function which only handles one vCPU.
Signed-off-by: NAlex Bennée <alex.bennee@linaro.org>
Reviewed-by: NSergey Fedorov <sergey.fedorov@linaro.org>
Reviewed-by: NRichard Henderson <rth@twiddle.net>

Message-Id: <20161027151030.20863-13-alex.bennee@linaro.org>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>