OpenVPN 2.4_rc2 release

2016.12.16 -- Version 2.4_rc2
David Sommerseth (9):
      Fix wrong configure.ac parsing of --enable-async-push
      Changes: Further improve systemd unit file updates
      systemd: Intermediate --chroot fix with the new sd_notify() implementation
      Further enhance async-push feature description
      Changes.rst: Mainatiner update on C99
      dev-tools: Add reformat-all.sh for code style unification
      The Great Reformatting - first phase
      Merge 'reformatting' branch into master
      auth-gen-token: Hardening memory cleanup on auth-token failuers

Gert Doering (1):
      Refactor setting close-on-exec for socket FDs

Lev Stipakov (2):
      Arm inotify only in server mode
      Add "async push" feature to Changes.rst

Magnus Kroken (1):
      mbedtls: include correct net/net_sockets header according to version

Selva Nair (2):
      Correctly state the default dhcp server address in man page
      Unhide a line in man page by fixing a typo

Steffan Karger (4):
      Fix (and cleanup) crypto flags in combination with NCP
      Deprecate --no-iv
      man: mention that --ecdh-curve does not work on mbed TLS builds
      Don't reopen tun if cipher changes
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