[PATCH] [SEH] Implement filter capturing in CodeGen

[Reid Kleckner]

Hi majnemer,

While capturing filters aren't very common, we'd like to outline
__finally blocks in the frontend to simplify -O0 EH preparation and
reduce code size. Finally blocks are usually have captures, and this is
the first step towards that.

http://reviews.llvm.org/D8825

Files:
  lib/CodeGen/CGException.cpp
  lib/CodeGen/CodeGenFunction.cpp
  lib/CodeGen/CodeGenFunction.h
  test/CodeGen/exceptions-seh-finally.c
  test/CodeGen/exceptions-seh.c
  test/CodeGenCXX/exceptions-seh.cpp

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