Original patch by Talin.

* Added the first LLVM unittest -- DenseMap.
* Updated mkpatch utility to include llvm/unittests dir
* Added top-level target "unittests" to run all unittests


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61541 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/unittests/Makefile b/unittests/Makefile
new file mode 100644
index 0000000..43592a1
--- /dev/null
+++ b/unittests/Makefile
@@ -0,0 +1,20 @@
+##===- unittests/Makefile ----------------------------------*- Makefile -*-===##
+#
+#                     The LLVM Compiler Infrastructure
+#
+# This file is distributed under the University of Illinois Open Source
+# License. See LICENSE.TXT for details.
+#
+##===----------------------------------------------------------------------===##
+
+LEVEL = ..
+include $(LEVEL)/Makefile.config
+
+LIBRARYNAME = UnitTestMain
+BUILD_ARCHIVE = 1
+CPP.Flags += -I$(LLVM_SRC_ROOT)/utils/unittest/googletest/include/
+CPP.Flags += -Wno-variadic-macros
+
+PARALLEL_DIRS = ADT
+
+include $(LEVEL)/Makefile.common