src/share/database/scripts/mysql/upgrade_026_to_027.sh.in
src/share/database/scripts/pgsql/upgrade_026_to_027.sh.in
    - new upgrade scripts

configure.ac
src/share/database/scripts/mysql/.gitignore
src/share/database/scripts/mysql/Makefile.am
src/share/database/scripts/pgsql/.gitignore
src/share/database/scripts/pgsql/Makefile.am
    added new upgrade scripts

src/bin/admin/tests/mysql_tests.sh.in
    updated
    mysql_upgrade_26_to_27_test()  - new test

src/bin/admin/tests/pgsql_tests.sh.in
    updated
    pgsql_upgrade_26_to_27_test() - new test

src/lib/mysql/mysql_constants.h
src/lib/pgsql/pgsql_connection.h
    updated schema version

src/share/database/scripts/mysql/dhcpdb_create.mysql
src/share/database/scripts/pgsql/dhcpdb_create.pgsql
    change client_class columns