v2.4_alpha2

2016.10.19 -- Version 2.4_alpha2

David Sommerseth (1):
      Update .mailmap to unify and clean up odd names and e-mail addresses

Gert Doering (1):
      Preparing for release v2.4_alpha2 (ChangeLog, version.m4)

Steffan Karger (1):
      Fix use-after-free bug in prepare_push_reply()
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