src/lib/dhcpsrv/pgsql_exchange.h
src/lib/dhcpsrv/pgsql_exchange.cc
src/lib/dhcpsrv/pgsql_lease_mgr.cc
    Moved getIPv6Value() from PgSqlLease6Exchange to
    PgSqlExchange and made it static

    PgSqlExchange::dumpRow() gets number of columns
    from result set, not parameter

src/lib/dhcpsrv/pgsql_host_data_source.cc
     PgSqlIPv6ReservationExchange
     PgSqlHostIPv6Exchange - now functional

src/lib/dhcpsrv/tests/pgsql_host_data_source_unittest.cc
    TEST_F(PgSqlHostDataSourceTest, get6AddrWithDuid)
    TEST_F(PgSqlHostDataSourceTest, addDuplicate6WithHWAddr)
    TEST_F(PgSqlHostDataSourceTest, optionsReservations6)
    TEST_F(PgSqlHostDataSourceTest, optionsReservations46)
    TEST_F(PgSqlHostDataSourceTest, formattedOptionsReservations6)
    TEST_F(PgSqlHostDataSourceTest, formattedOptionsReservations46)
    - All included and passing.

src/lib/dhcpsrv/pgsql_connection.h
    Added OID_TEXT

src/lib/dhcpsrv/pgsql_exchange.cc
    PsqlBindArray::addNull()

    class PgSqlExchange
        - getColumnLabel() - now gets column name from result set
        - getColumnValue variants are now static methods
        - rename column_labels_ to columns_
        - isColumnNull() new method tests if column in row is null
        - dumpRow() - debug method dumps row as text

src/lib/dhcpsrv/pgsql_host_data_source.cc
    PgSqlHostWithOptionsExchange
    PgSqlOptionExchange  now functional

src/lib/dhcpsrv/tests/pgsql_host_data_source_unittest.cc
    TEST_F(PgSqlHostDataSourceTest, addDuplicate4)
    TEST_F(PgSqlHostDataSourceTest, formattedOptionsReservations4)
    - Enabled and passing.

src/lib/dhcpsrv/host_data_source_factory.cc
    HostDataSourceFactory::create() - now instantiates PgSqlHostDataSource

src/lib/dhcpsrv/pgsql_host_data_source.cc
    Enabled basic IPv4 host statements and methods

src/lib/dhcpsrv/tests
    New file: pgsql_host_data_source_unittest.cc

src/lib/dhcpsrv/tests/Makefile.am
    Added pgsql_host_data_source_unittest.cc

    Merge branch 'master' into trac4277

src/lib/dhcpsrv
    pgsql_host_data_source.c
    pgsql_host_data_source.h  - new files, preliminary implementation

src/lib/dhcpsrv/Makefile.am
    Added new files pgsql_host_data_source.cc, pgsql_host_data_source.h

src/lib/dhcpsrv/dhcpsrv_messages.mes
    Added log messages DHCPSRV_PGSQL_HOST_DB_GET_VERSION, DHCPSRV_PGSQL_START_TRANSACTION

src/lib/dhcpsrv/pgsql_connection.cc
src/lib/dhcpsrv/pgsql_connection.h
    Added PgSqlTransaction
    Added PgSqlConnection::startTransaction()

src/lib/dhcpsrv/pgsql_exchange.cc
src/lib/dhcpsrv/pgsql_exchange.h
    PsqlBindArray
    - Added storage of conversion strings used for bound values
    - Added add() variants for uint8_t, IOAddress, uint8_t buffer
    - Added templated variant for miscellaneous types

    PgSqlExchange
    - Removed getColumnValue variants for various integers, replaced
    with templated version for miscellaneous types

src/lib/dhcpsrv/pgsql_lease_mgr.cc
    Added todo comment to remember to account for hwaddr columns added to lease6

src/lib/dhcpsrv/tests/pgsql_exchange_unittest.cc
    TEST(PsqlBindArray, basicOperation) - new test to exercise bind functions

    Merges in branch 'trac4275'

bin/admin/tests/pgsql_tests.sh.in
    Typos
share/database/scripts/pgsql/.gitignore
    Added upgrade_2.0_to_3.0.sh

share/database/scripts/pgsql/dhcpdb_create.pgsql
    Added entry for client_id to hosts_identifier
    Added commentrary for dhcp_option_scope
    Added periods to the ends of sentences.

Added 4.1 to 4.2 updates from MySQL and created upgrade
script for 2.0 to 3.0

src/share/database/scripts/pgsql/dhcpdb_create.pgsql
    - Enclosed the entire script in a single transaction
    - Removed DROP TABLE statements
    - Added host_identifier_type table and data
    - Added dhcp_option_scope table and data
    - Updated unqiue constraints for hosts table
    - Added scope_id and foreign key constraint to dhcp4_options table
    - Added scope_id and foreign key constraint to dhcp6_options table
    - Added unique contraint to ipv6_reservations table
    - Changed 'HWADDR_SOURCE_DOCSIS' to 'HWADDR_SOURCE_DOCSIS_CMTS'
    - Inserted row for 'HWADDR_SOURCE_UKNOWN'

src/share/database/scripts/pgsql/dhcpdb_drop.pgsql
    Added drops for host_identifier_type and  dhcp_option_scope

src/share/database/scripts/pgsql/upgrade_2.0_to_3.0.sh.in
    New file for upgrading Postgresql from 2.0 to 3.0

configure.ac
    Added src/share/database/scripts/pgsql/upgrade_2.0_to_3.0.sh

src/bin/admin/tests/pgsql_tests.sh.in
    - pgsql_upgrade_1_0_to_2_0 - new function which contains all the checks used
    to verify 1.0 to 2.0 upgrade (extracted from pgsql_upgrade_test)
    - pgsql_upgrade_2_0_to_3_0 - new function which contains all the checks used
    to verify 2.0 to 3.0 upgrade
    - pgsql_upgrade_test() - modified use new upgrade check fucntions

src/share/database/scripts/pgsql/Makefile.am
    Added entry for upgrade_2.0_to_3.0.sh

Postresql schema now supports host reservations with options,
and lease6 table now includes hardware address and source

src/share/database/scripts/pgsql/dhcpdb_create.pgsql
    Added Schema 3.0 upgrade section:
    - new tables: hosts, dhcp4_options, dhcp6_options,
      ipv6_reservations, lease_hwaddr_source

    - lease4Dumpdata() - results now sorted by lease address

    - lease6 table - added columns hwaddr, hwtype, hwaddr_source

    - lease6DumpHeader() - added labels for new columns
    - lease6DumpData() - added new columns, results now sorted by
      lease address

    - schema_vesion - bumped version to 3

src/share/database/scripts/pgsql/dhcpdb_drop.pgsql
    Added drops of new tables

src/lib/dhcpsrv/pgsql_lease_mgr.cc
    - PgSqlLeaseMgr::PgSqlLeaseMgr() - added logic to detect schema
    mismatch between the code and configured database

src/lib/dhcpsrv/pgsql_lease_mgr.h
    - Bumped PG_CURRENT_VERSION from 2 to 3

src/bin/admin/tests/data/pgsql.lease6_dump_test.reference.csv
    - Reordered entries to account for dump function sort order
    - Added values for new columns on lease6 table

src/bin/admin/tests/pgsql_tests.sh.in
    - pgsql_lease_version_test() - changed expected version to 3.0
    - pgsql_lease6_dump_test() - added new column values to inserted rows

Decided to not move the HostTest::doExchange class to the test
utils as it would cause circular dependency.

 - .arg() calls now in separate lines
 - clarified comment about clients meeting client class criteria