Adjust two tests to account for a nasty change in copying behavior
between C++03 and C++0x and its effect on exceptions, and another two to
not test move construction when rvalue references are not available.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@135445 91177308-0d34-0410-b5e6-96231b3b80d8
4 files changed