pgsql/ oc/src/sgml/runtime.sgml rc/backend/uti ...

CVSROOT:    /home/projects/pgsql/cvsroot
Module name:    pgsql
Changes by:    momjian@hub.org    01/06/18 12:14:44

Modified files:
    doc/src/sgml   : runtime.sgml
    src/backend/utils/adt: datetime.c
    src/backend/utils/misc: guc.c postgresql.conf.sample
    src/include/utils: datetime.h guc.h
    src/test/regress/expected: horology-no-DST-before-1970.out
                               horology-solaris-1947.out
                               horology.out timestamp.out
    src/test/regress/sql: horology.sql timestamp.sql

Log message:
    Add GUC setting for Australian timezones.  Uses new GUC boolean callback
    functions to clear date cache.  Allow regression tests to pass when
    timezone set.