CMake: New variable LLVM_LIBDIR_SUFFIX.

Patch by Ingmar Vanhassel!


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73217 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 45f3d0c..2f63051 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -23,7 +23,7 @@
   endif(MSVC)
   install(TARGETS ${name}
     LIBRARY DESTINATION lib
-    ARCHIVE DESTINATION lib)
+    ARCHIVE DESTINATION lib${LLVM_LIBDIR_SUFFIX})
 endmacro(add_clang_library)
 
 macro(add_clang_executable name)