Replace a nested namespace used for overload resolution with a struct. Richard Smith says that using the namespace results in an ODR violation, but I disagree. Nevertheless, the struct works just as well.
Replace a nested namespace used for overload resolution with a struct. Richard Smith says that using the namespace results in an ODR violation, but I disagree. Nevertheless, the struct works just as well.

git-svn-id: 756ef344af921d95d562d9e9f9389127a89a6314@302800 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/libcxx,llvm-mirror/libcxx,llvm-mirror/libcxx,llvm-mirror/libcxx,llvm-mirror/libcxx