Merge remote-tracking branch 'afaerber/tags/qom-cpu-for-anthony' into staging

QOM CPUState refactorings / X86CPU

* Fix for X86CPU model field of qemu32/qemu64 CPU models
* Bug fix for longjmp on FreeBSD
* Removal of unused function
* Confinement of clone syscall infrastructure to linux-user

# gpg: Signature made Wed 09 Oct 2013 03:40:51 AM PDT using RSA key ID 3E7E013F
# gpg: Can't check signature: public key not found

# By Andreas Färber (2) and others
# Via Andreas Färber
* afaerber/tags/qom-cpu-for-anthony:
  cpu: Drop cpu_model_str from CPU_COMMON
  cpu: Move cpu_copy() into linux-user
  cputlb: Remove dead function tlb_update_dirty()
  cpu-exec: Also reload CPUClass *cc after longjmp return in cpu_exec()
  target-i386: Set model=6 on qemu64 & qemu32 CPU models

include/exec/cpu-defs.h

@@ -178,7 +178,5 @@ typedef struct CPUWatchpoint {
                                                                         \
     /* user data */                                                     \
     void *opaque;                                                       \
-                                                                        \
-    const char *cpu_model_str;
 
 #endif