Updated notes about issues; marked 2062, 2223, 2394, 2460 and 2540 as complete.
Updated notes about issues; marked 2062, 2223, 2394, 2460 and 2540 as complete.

git-svn-id: 756ef344af921d95d562d9e9f9389127a89a6314@283781 91177308-0d34-0410-b5e6-96231b3b80d8

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