Add the README files to the distribution.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27651 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/System/Makefile b/lib/System/Makefile
index 80fea39..d4fc79c 100644
--- a/lib/System/Makefile
+++ b/lib/System/Makefile
@@ -11,6 +11,6 @@
 LIBRARYNAME = LLVMSystem
 BUILD_ARCHIVE = 1
 
-EXTRA_DIST = Unix Win32
+EXTRA_DIST = Unix Win32 README.txt
 
 include $(LEVEL)/Makefile.common