Update clang to the final 3.9.0 release. There were no more code changes

since the last release candidate.

contrib/llvm/tools/clang/lib/Basic/Version.cpp

@@ -36,7 +36,7 @@ std::string getClangRepositoryPath() {
 
   // If the SVN_REPOSITORY is empty, try to use the SVN keyword. This helps us
   // pick up a tag in an SVN export, for example.
-  StringRef SVNRepository("$URL: https://llvm.org/svn/llvm-project/cfe/branches/release_39/lib/Basic/Version.cpp $");
+  StringRef SVNRepository("$URL: https://llvm.org/svn/llvm-project/cfe/tags/RELEASE_390/final/lib/Basic/Version.cpp $");
   if (URL.empty()) {
     URL = SVNRepository.slice(SVNRepository.find(':'),
                               SVNRepository.find("/lib/Basic"));

lib/clang/include/clang/Basic/Version.inc

@@ -7,4 +7,4 @@
 
 #define	CLANG_VENDOR			"FreeBSD "
 
-#define	SVN_REVISION			"279689"
+#define	SVN_REVISION			"280324"