upstream imports r882

eihrul (7):
      static genvbo fix
      player color selection
      use only 5 bits for encoding color
      get rid of automake build system for enet
      use := for ENET_CFLAGS
      don't build enet on mingw
      simplify check_cflags.sh cc handling

nieb (5):
      media: Bones, jump frames
      media: Bones, crouch jump frames
      doc
      doc
      media: complex waypoints