Apparently, I don't know the difference between 'left' and 'right'. Swap parameters named 'lhs' and 'rhs' so that they correctly refer to the 'left hand side' and 'right hand side' of comparisons. No functionality change. Thanks to Arthur O'Dwyer for pointing this out to me.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@192080 91177308-0d34-0410-b5e6-96231b3b80d8