Merge pull request #9191 from sandreenko/CORERT-fat-call-transformation

CoreRT fat call transformation

diff --cc src/jit/compiler.cpp
Simple merge

diff --cc src/jit/compiler.h
Simple merge

diff --cc src/jit/flowgraph.cpp
Simple merge

diff --cc src/jit/gentree.h
Simple merge

diff --cc src/jit/importer.cpp
Simple merge