This change was suggested during a ticket review.

Both DHCPv4 and DHCPv6.

The identifiers are held on an ordered list and the server will
use them to search for host reservations for each client using
this order.

Added Angelo as contributor.

    Merges in trac4259.

    Fixed minor typos.

    Moved string/enum conversion functions inside D2ClientConfig

    Changed underscores to hypens in replace-client-name values and changed
    all literal values to lower case.

    Fixed minor wording issues in admin guide and new log messages.

    Added commentary and extra error logging to unit tests

    Added test case for invalid value of replace-client-name

The supported hex strings may have different formats:
- colon separated values,
- with '0x'prefix
- no prefix, no colons

Replace <cstdint> with <stdint.h> because the former is C++11 only.

Okayed on jabber.

    Merged in trac4243.

    Distcheck sporadically fails to clean up test_leases.csv.2
    can be left behind by dhcp4 and dhcp6 testing.

src/bin/dhcp4/tests/Makefile.am
src/bin/dhcp6/tests/Makefile.am
    - Added test_leases.csv.* to CLEANFILES

src/lib/asiolink/Makefile.am
    added asio_wrapper.h to list of sources

src/lib/asiolink/asio_wrapper.h
    updated commentary to include GNU/Boost bugs and
    added prominent warning comment