[network-manager-openvpn] (5 commits) ...merge: use unix socket for management and other misc fixes (bgo #738301)

[Dan Williams <dcbw src gnome org>]

Summary of changes:

  7904773... core: use unix domain management socket instead of TCP sock (*)
  0718413... core: fix protocol and port specified with remote address (*)
  65f5641... core: print executed openvpn command-line when debug loggin (*)
  627453c... core: use '--auth-retry interact' to query for failed passw (*)
  53a6213... merge: use unix socket for management and other misc fixes 

(*) This commit already existed in another branch; no separate mail sent