pgsql: Improve EncodeDateTime and EncodeTimeOnly APIs

Improve EncodeDateTime and EncodeTimeOnly APIs

Use an explicit argument to tell whether to include the time zone in
the output, rather than using some undocumented pointer magic.

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/ad4fb0d0d2f33ec0165f2a9a50a6d8cbcef4ab82

Modified Files
--------------
src/backend/utils/adt/date.c               |    4 +-
src/backend/utils/adt/datetime.c           |   65 ++++++++++++++++------------
src/backend/utils/adt/nabstime.c           |    2 +-
src/backend/utils/adt/timestamp.c          |    7 +--
src/backend/utils/adt/xml.c                |    5 +-
src/include/utils/datetime.h               |    4 +-
src/interfaces/ecpg/pgtypeslib/dt.h        |    6 +-
src/interfaces/ecpg/pgtypeslib/dt_common.c |   59 ++++++++++++++-----------
src/interfaces/ecpg/pgtypeslib/timestamp.c |    3 +-
9 files changed, 84 insertions(+), 71 deletions(-)