Update the synopsis and comments with the results of LWG #2255. No code to back it up at the moment; just comments
Update the synopsis and comments with the results of LWG #2255. No code to back it up at the moment; just comments

git-svn-id: 756ef344af921d95d562d9e9f9389127a89a6314@213768 91177308-0d34-0410-b5e6-96231b3b80d8

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