GitLab

    Several libraries depend on boost_system lib according to
    otool, but lacked linking to $(BOOST_LIBS) in their Makefile.am.
    This has been corrected:

    src/lib/asiodns/Makefile.am
    src/lib/config/Makefile.am
    src/lib/dhcp/Makefile.am
    src/lib/dhcp_ddns/Makefile.am
    src/lib/dhcpsrv/Makefile.am
    src/lib/eval/Makefile.am
    src/lib/stats/Makefile.am

Apparently we have dependency on BOOST, likely through
/cc/data.h which uses IOAddress ....

- Increase total_attempts one by one.
- Add debug message to indicate skipping reservations in subnet
  which classes do not match.

    Extracted command helper functions into new base class, so
    other hook libs may use it.

 - max attempts set to 0 in unit-tests (matching production code)
 - couple typos
 - new unit-test added (selectSharedNetworkByRelayAddressSubnetLevel)
 - ClientContext4 is now noncopyable
 - unused network parameter removed

src/lib/config/base_command_mgr.h
src/lib/config/base_command_mgr.cc
    Moved the hook point registration ouf of the
    BaseCommandMgr ctor and into static module space.

 - many more parameters are now inherited from shared-network to subnet4
 - parameters now passed as const reference
 - it is no longer possible to specify echo-client-id on shared-network
   level (because it's a global parameter)
 - example config commented properly