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
Marked issue 2284 as complete

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@192085 91177308-0d34-0410-b5e6-96231b3b80d8