[PATCH] Introduce LinkAllPasses.cpp as LLVMAllPasses

[NAKAMURA Takumi]

  Although it'd be one of possible fixes, at least in trunk, to add objcarc to dragonegg, ...

  Are you really planning to deprecate the way of "show all available paths" and to let us update each transforms client (opt, bugpoint, &c) whenever passes are added/removed?
  Or do you have alternates? I could abandon this patch then.

http://llvm-reviews.chandlerc.com/D2549