Tag 3.4.2 release using new naming convention.



git-svn-id: https://llvm.org/svn/llvm-project/libcxx/tags/RELEASE_342@213539 91177308-0d34-0410-b5e6-96231b3b80d8
4863 files changed
tree: 1611bc2322ab9b1fde4fc5bf0d36ca85ea83be34
  1. final/