Teach libclang to enable multithreading in LLVM, since libclang clients are likely to be multithreaded. Also move the printing of timers to somewhere better for multithreaded libclang clients

llvm-svn: 114760
diff --git a/clang/lib/Frontend/ASTUnit.cpp b/clang/lib/Frontend/ASTUnit.cpp
index b6c4eaa..bd7e712 100644
--- a/clang/lib/Frontend/ASTUnit.cpp
+++ b/clang/lib/Frontend/ASTUnit.cpp
@@ -84,6 +84,9 @@
 
   ClearCachedCompletionResults();
   
+  if (TimerGroup)
+    TimerGroup->printAll(llvm::errs());
+
   for (unsigned I = 0, N = Timers.size(); I != N; ++I)
     delete Timers[I];
 }