avs_commons 5.3.1

Features

• Added AVS_NET_SOCKET_OPT_PREFERRED_ADDR_FAMILY and
  AVS_NET_SOCKET_OPT_FORCED_ADDR_FAMILY options that allow setting address
  family configuration of an already created socket
• Automatically upgrading IPv4 sockets to IPv6 when connecting is now possible
• Added AVS_UNIT_MOCK_DECLARE() and AVS_UNIT_MOCK_DEFINE() to facilitate
  declaring mocked functions with external linkage

Improvements

• Slightly changed the semantics of avs_sched_run(), to fix erroneous
  behavior on platforms with low-resolution system clocks