A collection of minor type-o fixes. The first two aren't testable, but all tests pass with them. I stumbled across them while experimenting with a std::move that checks its argument for non-const. The third corrects a test that is currently failing.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@190563 91177308-0d34-0410-b5e6-96231b3b80d8

include/unordered_map

@@ -641,7 +641,7 @@ private:
             : __cc(std::forward<_Args>(__args)...) {}
 
         __value_type(const __value_type& __v)
-            : __cc(std::move(__v.__cc)) {}
+            : __cc(__v.__cc) {}
 
         __value_type(__value_type&& __v)
             : __nc(std::move(__v.__nc)) {}