[Modules] Update to reflect the move of CallSite into the IR library in
LLVM r202816.

git-svn-id: http://llvm.org/svn/llvm-project/cfe/trunk@202817 91177308-0d34-0410-b5e6-96231b3b80d8
[Modules] Update to reflect ValueHandle moving to the IR library in LLVM
r202821.

git-svn-id: http://llvm.org/svn/llvm-project/cfe/trunk@202822 91177308-0d34-0410-b5e6-96231b3b80d8
[Modules] Update to reflect the move of CFG.h to the IR library in LLVM
r202827.

git-svn-id: http://llvm.org/svn/llvm-project/cfe/trunk@202828 91177308-0d34-0410-b5e6-96231b3b80d8