* include/tr1/functional (hash): New function object.
        * include/tr1/hashtable: New file.
        * include/tr1/unordered_set: New file.
        * include/tr1/unordered_map: New file.
        * include/Makefile.am: Add three new TR1 headers.
        * include/Makefile.in: Likewise.
        * testsuite/tr1/6_containers/unordered/insert/array_syntax.cc: New test.
        * testsuite/tr1/6_containers/unordered/insert/map_single.cc: New test.
        * testsuite/tr1/6_containers/unordered/insert/multimap_single.cc: New test.
        * testsuite/tr1/6_containers/unordered/insert/multiset_single.cc: New test.
        * testsuite/tr1/6_containers/unordered/insert/set_single.cc: New test.
        * testsuite/tr1/6_containers/unordered/instantiate/hash.cc: New test.
        * testsuite/tr1/6_containers/unordered/instantiate/map.cc: New test.
        * testsuite/tr1/6_containers/unordered/instantiate/multimap.cc: New test.
        * testsuite/tr1/6_containers/unordered/instantiate/multiset.cc: New test.
        * testsuite/tr1/6_containers/unordered/instantiate/set.cc: New test.

From-SVN: r95219