CMake: install libclang.dll to $CMAKE_INSTALL_PREFIX/bin.

Patch by Joe Groff.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@151448 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/CMakeLists.txt b/CMakeLists.txt
index bb92fee..1197610 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -204,7 +204,8 @@
   endif(MSVC)
   install(TARGETS ${name}
     LIBRARY DESTINATION lib${LLVM_LIBDIR_SUFFIX}
-    ARCHIVE DESTINATION lib${LLVM_LIBDIR_SUFFIX})
+    ARCHIVE DESTINATION lib${LLVM_LIBDIR_SUFFIX}
+    RUNTIME DESTINATION bin)
   set_target_properties(${name} PROPERTIES FOLDER "Clang libraries")
 endmacro(add_clang_library)