[PATCH] [lld] Boot bitrotting add_lld_library() from CMake build

[Greg Fitzgerald]

To #1: that's why this patch stops here.  We can move exactly this far before having that discussion.

To #2: No sign of libLLVMlld* libs here (building on OS X).


REPOSITORY
  rL LLVM

http://reviews.llvm.org/D7074

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