Fix windows build after r293821
Fix windows build after r293821

We started passing the list of libraries to link to the
add_lldb_unittest macro, but that macro wasn't actually doing anything
with them. Fix that.

git-svn-id: 4c4cc70b1ef44ba2b7963015e681894188cea27e@293913 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/lldb,llvm-mirror/lldb,llvm-mirror/lldb,apple/swift-lldb,apple/swift-lldb,llvm-mirror/lldb,apple/swift-lldb,apple/swift-lldb,llvm-mirror/lldb,apple/swift-lldb,apple/swift-lldb