exclude cmake build directories from being installed
with "make install".  Patch by Michael Forney!

llvm-svn: 102299
diff --git a/clang/CMakeLists.txt b/clang/CMakeLists.txt
index e91fb43..1be646d 100644
--- a/clang/CMakeLists.txt
+++ b/clang/CMakeLists.txt
@@ -115,6 +115,7 @@
 install(DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/include/
   DESTINATION include
   FILES_MATCHING
+  PATTERN "CMakeFiles" EXCLUDE
   PATTERN "*.inc"
   )