Modify the unittests Makefiles so that they don't rebuild parts of LLVM just to
run the tests. Most of this was stolen from the llvm/test Makefiles.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61648 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/autoconf/configure.ac b/autoconf/configure.ac
index 2054548..c9bd8f2 100644
--- a/autoconf/configure.ac
+++ b/autoconf/configure.ac
@@ -1029,6 +1029,7 @@
 AC_CONFIG_MAKEFILE(runtime/Makefile)
 AC_CONFIG_MAKEFILE(test/Makefile)
 AC_CONFIG_MAKEFILE(test/Makefile.tests)
+AC_CONFIG_MAKEFILE(unittests/Makefile)
 AC_CONFIG_MAKEFILE(tools/Makefile)
 AC_CONFIG_MAKEFILE(utils/Makefile)
 AC_CONFIG_MAKEFILE(projects/Makefile)