Merge changes I96464d76,Id5e77316,Icb42a081,I68afc181,I82094e46

* changes:
  Fix how the ProfileSaver thread attaches to the runtime.
  Fix -Xint and -Xusejit interaction
  Add command line option for jit invoke transition weight
  Split profile recording from jit compilation
  Allow the framework to register sensistive threads to the runtime

diff --cc compiler/driver/compiler_driver.cc
Simple merge

diff --cc runtime/class_linker.cc
Simple merge

diff --cc runtime/runtime.cc
Simple merge