[clang] [clang-repl] Fix linking against LLVMLineEditor

[mgorny]

Summary

LLVMLineEditor library is part of the LLVM dylib. Move it into
LLVM_LINK_COMPONENTS to avoid duplicate linking when dylib is being
used. This fixes building standalone clang against installed LLVM
without static libraries.

[v.g.vassilev]

Thanks!

clang/tools/clang-repl/CMakeLists.txt

 set( LLVM_LINK_COMPONENTS
   ${LLVM_TARGETS_TO_BUILD}
   Core
+  LineEditor
   Option
   OrcJIT
   Support
   )
 
 add_clang_executable(clang-repl
   ClangRepl.cpp
   )
 
 clang_target_link_libraries(clang-repl PUBLIC
   clangBasic
   clangInterpreter
   clangTooling
-  LLVMLineEditor
   )