pgsql: Add validator to PL/Python

Add validator to PL/Python

Jan Urbański, reviewed by Hitoshi Harada

Branch
------
master

Details
-------
http://git.postgresql.org/gitweb?p=postgresql.git;a=commitdiff;h=15f55cc38a82dfa3d7898a7c30a303b1b3e87dc3

Modified Files
--------------
src/include/catalog/catversion.h              |    2 +-
src/include/catalog/pg_pltemplate.h           |    6 +-
src/pl/plpython/expected/README               |    2 +
src/pl/plpython/expected/plpython_error.out   |   24 ++++
src/pl/plpython/expected/plpython_error_0.out |  152 +++++++++++++++++++++++++
src/pl/plpython/expected/plpython_record.out  |    6 +-
src/pl/plpython/expected/plpython_types.out   |    6 +-
src/pl/plpython/expected/plpython_types_3.out |    6 +-
src/pl/plpython/plpython.c                    |   39 +++++++
src/pl/plpython/sql/plpython_error.sql        |   23 ++++
10 files changed, 259 insertions(+), 7 deletions(-)