Move unittest driver to utils/unittest/UnitTestMain.
 - This eliminates a race between building the unittests and linking the
   UnitTestMain library.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81719 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/unittest/Makefile b/utils/unittest/Makefile
index 2f3e601..6a09341 100644
--- a/utils/unittest/Makefile
+++ b/utils/unittest/Makefile
@@ -8,6 +8,6 @@
 ##===----------------------------------------------------------------------===##
 
 LEVEL = ../..
-PARALLEL_DIRS = googletest
+PARALLEL_DIRS = googletest UnitTestMain
 
 include $(LEVEL)/Makefile.common