Add @expectedFailure decorator for test_with_dwarf_and_run_command() test method:
Add @expectedFailure decorator for test_with_dwarf_and_run_command() test method:

    rdar://problem/8659840
    test failure: ./dotest.py -v -t -f NamespaceTestCase.test_with_dwarf_and_run_command


git-svn-id: b33bab8abb5b18c12ee100cd7761ab452d00b2b0@118861 91177308-0d34-0410-b5e6-96231b3b80d8

apple/swift-lldb,llvm-mirror/lldb,apple/swift-lldb,llvm-mirror/lldb,apple/swift-lldb,apple/swift-lldb,apple/swift-lldb,apple/swift-lldb,llvm-mirror/lldb,llvm-mirror/lldb,llvm-mirror/lldb