Teach the extras repository to actually install the clang-format tool.

We should also install the clang-format.py script somewhere that makes
since for a Vim integration script. I don't know where that is though,
so just installing the binary for now. This is enough to let me use the
script from a checkout combined with the installed (and thus less likely
to crash or be slow) clang-format binary.

llvm-svn: 171164
GitOrigin-RevId: 5826f96e510774c6176cf221a90e5334443bda62
diff --git a/clang-format/CMakeLists.txt b/clang-format/CMakeLists.txt
index 218e52a..c86a920 100644
--- a/clang-format/CMakeLists.txt
+++ b/clang-format/CMakeLists.txt
@@ -11,3 +11,7 @@
   clangBasic
   clangRewriteFrontend
   )
+
+install(TARGETS clang-format
+  RUNTIME DESTINATION bin)
+