update

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3942 c046a42c-6fe2-441c-8c8c-71466251a162

TODO

 short term:
 ----------
+- x86_64: fxsave/fxrestore bugs
+- x86_64: lcall/ljmp intel/amd differences
+- x86_64: cmpxchgl
+- x86_64: cmovl bug
+- x86: monitor invalid 
 - cycle counter for all archs
 - cpu_interrupt() win32/SMP fix
 - support variable tsc freq