clang/test/lit.cfg: Remove get_llc_props. check-clang itself no longer invokes llc.

Only a few tests depend on llc yet.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@196797 91177308-0d34-0410-b5e6-96231b3b80d8
[CMake] clangDriver: Move LLVM stuff in target_link_library to LLVM_LINK_COMPONENTS.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@196798 91177308-0d34-0410-b5e6-96231b3b80d8
[CMake] clang/lib: Satisfy dependencies to add *actually used* libraries on target_link_libraries() and LLVM_LINK_COMPONENTS.

I will prune redundant dependencies later.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@196800 91177308-0d34-0410-b5e6-96231b3b80d8