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
7 files changed