qemu: Collective update
This update fixes the following issues for qemu:
- fix segfault even better
- linux-user: improve locking even across tb flushes
- linux-user: pin multi-threaded applications to a single host cpu
- linux-user: improve lock
- linux-user: add tcg lock for multi-threaded guest programs
-
Submitted by
Stephan Kulow (coolo)
